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This is the support site for Andrews & Arnold Ltd , a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!

VoIP Phones - Yealink DECT

Configuring Yealink DECT phone for AAISP

Relevant to: Yealink W60B, W70B, W73P, W53P and other base stations

The Yealink W60B/W70B is a DECT base station aimed at home as well as small and medium-sized businesses. Its main specifications are:

Up to 8 handsets
Up to 8 SIP accounts
Up to 8 simultaneous calls
Support for additional 'DECT repeaters'
IPv4 and IPv6
PoE or Mains plug for power
Transfer button (allows assisted or blind transfers to other SIP extensions/external numbers)
Docs/firmware from Yealink: https://support.yealink.com/en/portal/docList?archiveType=document&productCode=b0040cca269c2a01

Credentials

The PIN is used to register handsets to the base station, and for the handset to access settings from the base station. When a Base and a handset are supplied together in a single box, then the handset should already be registered to the base station. You can use these steps to register additional handsets though:

Registering an additional Handset

Power up handset
Press the button under 'Reg'
Hold the 'Radio' button on the Base for 3 seconds
Handset should then initialise
Go to the Base station UI and set up the new account:
Account - Set Account2 --> Fill in details
Account - Handset name --> Set the name

Scroll to Settings & press Ok.

Arrow down to 6.Registration the press Ok.

Press Register Handset.

Radio Button on Base Unit

Find the IP address of the Base station & login to setup web pages.

By default the Yealink base unit picks up an IP address using DHCP. You can find the IP address from the Handset as follows:

Press 'Ok' on the handset and 'Ok' on 'Status'
Select 'Base' and press 'Ok'
Under IPv4 you will see the IP address e.g. 192.168.1.3 (different for each user).
Enter that IP in the address bar of your Web browser.
Login with admin credentials. (default is user:admin password:admin).

3.1 Press Ok on the handset and Ok on Status

3.2 Select Base and press Ok

3.3 Under IPv4 you will see the IP address.

Yealink and Voiceless Settings

On the web interface, go to:

Select 'Account' & 'Register' tab & enter you VoIP number (+44...) in 'Register Name' & 'Username'.
Enter SIP from your control page into 'Password' box.
Set 'Server Host' to 'voiceless.aa.net.uk'.
Click 'Confirm'.
If correct then you should see Register Status = 'Registered'.
If you have more than one number you can select 'Account1' drop down and add further numbers.

Repeat this for any other accounts you want to add.

Check the SIP registration status:

You should the the account Status as 'Registered'

Screenshot of Account registration page

VoIP Account settings

Handset Assignment

Here you can assign which of your (up to) 8 SIP accounts are to ring which of your (up to) 8 handsets! You can also make up to 8 calls at once, so a single base station can support a small office of people.

From the 'Account' tab select 'Number assignment' from menu.
Here you can select which handsets are connected to your numbers for outgoing and incoming calls.

You have the flexibility to decide which VoIP account should ring which handset, and also which account the handsets use to make their outgoing calls.

Screenshots of number assignment page

Number Assignment

Four Handsets sharing one VoIP Account

Other optional settings

These are optional, but recommended settings to have:

To disable Ghost calls

Transfer a call

The handsets, eg the W53H, have a dedicated 'Transfer' button 'TRAN'. This lets you transfer a call to someone else.

Assisted Transfer on a Yealink W53H handset

Say you have an incoming call that you've answered, and you want to transfer it to someone else and introdice the caller as you go...

Answer the incoming call, and find out who they want to be transferred to
At this point the caller is put on hold
Enter in the extension number or full number of who you want to transfer the call to
At this point you will be ringing the third party
If no answer, then you can press the button under End to go back to the original caller
At this point you can also Blind transfer the call, by pressing the button under Transfer
Once answered, you can introduce the original caller and press the button under Transfer

DND - Do not disturb

You can enable/disable DND via the handset for each of the SIP accounts allocated to the Yealink handset:

Hold the button on the Base for 3 seconds

Factory reset the Yealink DECT Base Station

If you have lost the password you will have to factory reset the base station, and the default username and password will then work, and you'll need to configure the unit again.

There are a few ways to factory reset the Yealink base station:

From web ui

If you know the password!

From a connected handset

You'll need to know the PIN (default is 0000)

From the actual base station

Unplug the power
Press and hold the Connect button
Whilst holding, plug in the power
Wait until all three lights on the base station are showing as solid green
Release the connect button
Wait a further 5 minutes
Then, reboot the base station by unplugging it from power and plugging it back in

Firewall & Security

You will also want to set up firewall rules, as per the VoIP Firewall page.
Also see the VoIP Security page for information about securing your VoIP service.
VoIP Phones

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When purchasing a Yealink W52P/W56B base unit and W52H Cordless handset(s) OR Yealink W60B/W70B base unit and W56H Cordless handset, through HostPilot or directly from a sales representative, the devices will automatically appear on your Devices list. Most of the provisioning process is plug and play, however, you still need to assign handsets to the base in HostPilot, assign users to handsets, and register the handsets to the base unit.

Powering up and provisioning
Add handset to base in HostPilot

Assign User to the handset in HostPilot

Notable Limitations

The W52B can only use the W52H handsets
The W52B is capable of 5 handsets, but can only use 4 simultaneously.
The W56B can use both the W52H and W56H handsets
As with the W52B, the W56B is capable of 5 handsets, but can only use 4 simultaneously.
The W60B can only use the W56H handsets.
The W60 is capable of using 8 handsets and can use all 8 handsets simultaneously.
The W70B can only use the W56H handsets.
The W70 is capable of using 10 handsets and can use all 10 handsets simultaneously.

Battery Information

Technology: Nickel Metal Hydride (NiMH)
Voltage: 1.2V
Capacity: 800mAh
Sanyo NiMH 800
Yuasa Technologies AAA 800

There are no exceptions to this rule; both bases and handsets work on different firmware versions that are dependent on their respective devices.

Important note on Mixing Bases and Handsets

The original W52P Base supports only one type of handset; the W52H Handset. The new W60B Base supports only one type of handset; the W56H Handset.

You cannot use an older W52H Handset on the new W60B Base
You cannot use a newer W56H Handset on the old W52B Base

Set up your W52P/W56B/W60B or W70 Base unit

Powering up and provisioning..

The base unit you received has already been pre-programmed to search for the Intermedia Unite provisioning server, and your W52B/W56B/W60B or W70 base unit has already been created in your Devices table in HostPilot. Provisioning will start immediately after the base unit is powered up and has detected an internet connection.

Find a good central location for the base unit to reside; you want to make sure that all handsets get equal coverage.
Plug the base unit into your router.
Plug the power adapter into the base unit, and plug it into a power outlet.

The base will boot to begin the provisioning process. Do not unplug the base unit from the power while any of the LED lights are blinking. The base may restart several times during this process and is finished when the Power and Network LEDs are solid green. (the handset LED is only lit once handsets are registering successfully to the base)

Once the base unit lights are solid green you can start adding handsets to your base unit configuration in HostPilot.

Set up W52H/W56H Handsets

Add a handset to base in hostpilot.

In order for your handset to work with the base unit, you will need to add the handset to the base unit configuration in HostPilot. It is also necessary to register the handsets to the base.

Assigning a user to a handset allows the handset configuration to adopt information previously configured on the user. The handset will gain the extension number and any direct dial numbers assigned to the user; this means the handset will ring any time the extension or DID receives a call. To assign a user:

Add the user by selecting their name in the User drop-down field. Note: The user must be activated (with a phone number assigned) in order to assign them to a device.
Adjust the address information to match where the physical hardware will be located. (current hardware location will be used by default)
Read the 911 Policies and limitations and click the checkbox to confirm you understand.

When the page refreshes, you will be returned to the General tab for the handset and will see User (ext number) under Assigned User .

Now that you have your handset added to the base and assigned a user, you should unplug the power to your base unit, wait 3 seconds, and plug it back in; this will force the base to reach out to the provisioning server and configure the line information for the handset(s).

Note: for the handsets to works, it is extremely important that you register handsets to the base in the same order they were configured to the W52P or W60B base configuration in HostPilot.

The base organizes handsets by assigning them to Lines and each handset occupies a line between 1 and 5. When you add a handset to the base and assign a User to the handset in HostPilot, the base keeps track of the handset by assigning that User to Line 1 for the first handset, Line 2 for the second handset, etc. This means you must register handsets with the base unit in the same order they appear on the base's Cordless Phones tab in order to ensure the correct User is displayed on the correct handset. It is good practice to mark your handsets by serial number (use the last 4 digits of each serial number of the handset) so you can properly register each handset in the correct order.

To register a handset to the base:

Press and hold the button on the front of the W52P/W56B/W60B or W70 base unit (about 5 secs); the registration LED will slowly flash, indicating the base station is in the registration mode
Press the OK button on the handset to enter the main menu
Go to Settings > Registration and press OK on Register Handset
Press OK on Base 1; the handset will search for the base registration signal Note: If the Handset has trouble searching for the base, Power Cycle the Base and try again.
Press the OK soft key when the LCD screen displays the RFPI code of the base station
Enter the system PIN (default: 9871)
Press the Done soft key.

The handset will play a warning tone and prompt Handset Subscribed , which indicates the handset is registered successfully. After successful registration, an internal handset number and handset name appear on the LCD screen.

Is this answer helpful?

Article information.

Article ID: 15553

Last updated on: 12/22/2023 07:52 AM

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Yealink Frequently Asked Questions

Connecting businesses across the world.

Audio Conferencing
DECT Phones
Desktop IP Phones
Teams Devices
Video Conferencing

How do I install a VCH with my Yealink VC device?

The VCH can be installed with the VC800 and VC200 and it provides a connection between the video conferencing system and a computer. It comes with the VC800 and can be bought separately for the VC200. To setup the device it requires 3 cables. On the left side an Ethernet cable that will connect to the CP960, right-hand side’s Ethernet cable will connect to the VC800 and the HDMI cable will connect to the computer.

How do I register my device for a Yealink YMS account

First, download the Yealink video conference desktop software from the following link: http://support.yealink.com/documentFront/forwardToDocumentDetailPage?documentId=88

Follow the steps below to register your device

Select Yealink Meeting Server
Enter Yealink Meeting Server account
Enter Yealink Meeting Server account password

Registering the VC device to the Yealink Meeting Server

Enter the account info then register.

Choose Yealink Meeting Server

Which room systems are the Yealink video conference endpoints compatible with?

The following tables show the compatibility with the room systems and infrastructures from other vendors.

Infrastructure:

What is the bandwidth consumption of yealink video conferencing endpoints.

Yealink video conferencing endpoints VC200/VC500/VC800 support a range of bandwidth from 256 kbps to 6 Mbps. The minimum bandwidth requirement is 256 kbps to have a video conference in CIF resolution. The tables below list the bandwidth consumption for the protocols H.264HP and H.265.

Will the Yealink B2K Skype adapter work with other software?

The Yealink B2K Skype adapter can only work with Skype. It will not work with other VOIP software, such as Yate or Google Voice.

How do I make a call using a remote computer, such as Skype?

Yealink IP phones can interact with web server applications by receiving and handling an HTTP or HTTPS GET request. When receiving a GET request, the IP phone will perform the specified action and respond with a 200OK message.

Ensure that the server or computer’s IP address in in the “allow IP list”. Or you can enter “any” in “Action URI allow IP List”, which means you will allow any devices to control the phone.

To dial a number, the valid URL format is http(s):///servlet?key=number=xxx&outgoing_uri=y . XXX is the number you want to dial, and y is the SIP URL you dial from. For example, http://10.3.20.10/servlet?key=number=1234&[email protected]. It refers to account 1006 from 10.2.1.48 dial 1234 out.

What is the Jitter Buffer and how should I use it?

Jitter buffer is a shared data area where voice packets can be collected, stored, and sent to the voice processor in even intervals. Yealink provides two options for the Jitter Buffer settings, either adaptive or fixed.

A fixed jitter buffer adds a fixed delay to voice packets. You can configure the delay time for the static jitter buffer. An adaptive jitter buffer can adjust based on the delays in the network. The range of this delay time is configurable.

Maximum Delay and Minimum Delay

There are two parameters are used to limit the range of the delay. When receiving a RTP packet, it will be defined as an underflow event if the packet delay is smaller than minimum, and vice versa an overflow event if it is greater than maximum. In both cases this will cause packet loss, and lead to audio loss. The Max delay and Min delay are used only when the Jitter Buffer is configured to be “fixed”. If the Jitter Buffer is configured as adaptive, it will adjust itself accordingly base on the network latency. It is recommended to use adaptive Jitter Buffer.

Can the phone lock be scheduled for certain times?

What does the flashing LED mean?

When the phone is idle and the LED flashes, it means there is a missed call or an unread voicemail.

When the phone is in the power saving mode the LED flashes to indicate that the phone is still operating but under the power-saving mode.

How do I disable the phone lock function?

The phone lock function needs to be disabled on the Skype for Business server. Please ask your network administrator to disable it.

How do I change the Date and Time format on my online account?

The Date and Time format needs to be set on the Skype for Business server. Please ask your network administrator to change the format. The following steps show how to change the date and time format on the server:

How do I enable BToE on my Online account?

The BToE (Better Together over Ethernet) needs to be enabled on the Skype for Business server. Please ask your network administrator to enable this feature. The following steps show how to enable BToE on the server: Use the cmdlets “Get-CsIPPhonePolicy” to review the BToE status.

If the value of the “ EnableBetterTogetherOverEthernet ” is False , use the cmdlets “ Set-CsIPPhonePolicy -EnableBetterTogetherOverEthernet $True ” to turn it to true . Then the BToE feature will always be enabled.

How do I pull the Syslog, config.bin and Pcap trace for support?

For desktop phones:.

Login to the web interface of the device.
Go to Settings → Configuration → change the syslog log level to 6 → Press Confirm.
Under the Pcap Feature, press the Start button. Recreate the issue on the phone step by step.

For Yealink CP960:

Go to Settings → Configuration → press Start button in Export All Diagnostic Files. Recreate the issue on the phone step by step.

How do I get a Skype for Business licence for my Yealink device?

It is suggested that customers to purchase the Yealink MS Teams Edition (Pre-installed Firmware and Licence) For assistance with upgrading your device, please contact Support.

How do I import Skype for Business licence into my Yealink phone?

Log into web user interface. Browse to the Import licence page: Security → Licence. From here you can upload the Skye For Business licence.

How do I ensure my MS account logs off when I switch off my PC?

If your PC is connected to the PC port on your Yealink phone, you can set the Yealink phone to auto log off when the PC is disconnected. In order to do this, set the following parameter on the phone: network.802_1x.proxy_eap_logoff.enable=1 If this is set to 0, then the phone will do nothing when the PC switches off.

How do I upgrade my Yealink SIP or Skype for Business device to a MS Teams edition?

How do i enable the dd10k dect dongle on my yealink phone.

First, ensure that the phone’s firmware is current or up to date. Insert the DD10K Dongle in to the USB port of the phone and reboot the phone. Set the DECT base station to registration mode. Once phone has booted up and is idle, press the Reg softkey to register phone to the base station and enter pairing password (default: 0000)

How do I apply Call Forward or DND applied individual SIP accounts?

It is possible to set call forward and Do Not Disturb (DND) to individual SIP accounts registered on the phone, rather than to all the phone as a whole. In the web interface, browse to the Features tab, set the value for Forward and DND to Custom. Now when a customer presses the DND button or sets Call Forward, they will be prompted to select which SIP account they want to apply it to.

How do upgrade the firmware on a Yealink Phone?

To upgrade firmware via web user interface:

Login the web interface of the phone.
Browse to Settings → Upgrade.
Click Browse and select the firmware from your local system.
Click Upgrade to upgrade the firmware. The browser pops up the dialog box “Firmware of the SIP Phone will be updated. It will take 5 minutes to complete. Please don’t power off!”
Click OK to confirm upgrade

Note: The firmware upgrade process can take a few minutes to complete. Please ensure that the device does not lose power during this process or you may cause damage to the phone.

Where do I find the latest firmware?

The latest firmware versions can be downloaded from the Yealink Website

Select the relevant Product Range → Phone Model .
Scroll down to Firmware & Release Notes and select the firmware version (Please note the latest firmware is located listed first and will be marked “New” )
Save the firmware to your desired location on your device.
Upgrade the firmware via the phone’s web interface. Detailed steps can be found here: How do upgrade the firmware on a Yealink Phone?

Which Yealink IP phones support Bluetooth and Wi-Fi Compatibility?

What headsets are compatible with the yealink phones.

Please refer to headset compatibility list.

Yealink Headset Compatability List

How do you increase the Auto Logout time for the web interface?

To configure the logout time, log in to the web interface and browse to Features → General Information. The Auto-Logout Time can be set to between 1 and 1000 minutes. Click Confirm to save the changes.

There is no audio from my wired headset

Ensure that the headset you are using is compatible with your Yealink IP phone. Please refer to headset compatibility list

Yealink Headset Compatibility List

What is the PoE power consumption for Yealink phones?

Yealink IP phones support the IEEE 802.3af standard for PoE devices and are compatible with any devices implementing this standard.

How do I increase the headset microphone volume?

You are able to adjust the microphone gain for headsets from the web interface. Note: it is recommended that this change be made incrementally and with caution as it can affect the voice quality. Open the web interface and browse to Features → Audio

In order for the changes to take place, the phone will reboot after the changes are “Confirmed”

How many simultaneous calls are supported on Yealink Phones?

The number of simultaneous calls is dependent on the model of phone:

How many phone numbers can be displayed for one Remote Contact?

The number of phone numbers is dependent on the model of phone:

Yealink Desktop phones (e.g. T23G, T42S, T54W) do not have a limitation.
Yealink DECT Phones W60P and W53P will show a maximum of three number per contact.
Yealink DECT Phone W52P will show a maximum of two number per contact.

How do I set number keys as Speed Dial Keys?

Prefix: Enter the digit that you want to dial for the certain phone number Replace: Enter the phone number that you want to dial out when press Prefix digit Account: Enter the line or account that you wish to dial out from

Can I connect my door camera to my Yealink phone?

Unfortunately, Yealink phones are not compatible with doorbell systems and thus cannot be connected to your door camera.

The firmware version has not changed after I’ve performed an upgrade

After performing a manual firmware upgrade, the firmware version has not changed.

It may be that your device is running a custom firmware version, which restricts the upgrade to a standard firmware version.

Please contact your service provide to confirm. If your phone is running a standard firmware version, please contact support for assistance.

Do Yealink IP phone support IAX?

IAX (Inter-Asterisk eXchange) is an Asterisk proprietary protocol and as such Yealink does not support this protocol.

What are the power adapter specifications for Yealink phones?

What opus codec is supported by yealink phoneswhat opus codec is supported by yealink phones.

Yealink phones support VBR (Variable Bit Rate) and CBR (Constant Bit Rate) in the Opus codec, but do not support FEC (Forward Error Correction).

How do I export pcap data to Wireshark?

There may be some instances where you are unable to get the pcap data from the web interface or you may require additional information for troubleshooting. In these cases, you export the pcap information to Wireshark. Please follow the steps below:

Connect the PC port of the Yealink phone to your PC.

How do I export syslogs to Syslog server?

There may be some instances where you are unable to get the syslog information from the web interface or you may require additional information for troubleshooting. In these cases, you are able to specify a dedicated Syslog server where the syslog files can be exported automatically. It is assumed that the Syslog server has been set up to store the syslog information. In the phone’s web interface browse to Settings → Configuration → Syslog section Enable to Export Syslog to server → then enter the Syslog server address, e.g. 10.2.2.10 Click Confirm to save the settings.

How do I Reset a Yealink IP Phone to Factory Default settings?

Method 1: via the web interface..

Log in to the web interface
Go to Settings → Upgrade page, select Reset to Factory Settings
Press OK to continue, press Cancel to quit.

Note: The reset process can take a few minutes to complete. Please ensure that the device does not lose power during this process or you may cause damage to the phone.

Method 2: Via the phone menu.

Press Menu Softkey.
Go to Settings → Advanced , enter the phone password.
Select Reset to Factory option. The LCD screen will show the following prompt: “Warning, Reset to Factory Setting”. Press OK to continue.

Method 3: Manual reset

Press and hold the “OK” button for about 5 seconds and the phone will automatically reset to factory default settings.

How many redundant SIP servers can be set for Yealink phones?

Yealink phones can support a maximum of 3 SIP servers for redundancy.

You are able to set SIP servers 1 and 2 via the web interface. SIP server 3 can only be set using auto-provisioning.

For assistance with configuring SIP server 3, please contact support.

The LEDs on the base station do not light up

There are three LED indicators on the base station, when all three LEDs are lit solidly, this means the base station is working correctly. If not all LEDs are lit, follow these diagnostic steps: Connect a working power supply to base station, if the power LED does not light up it could be a hardware problem. Connect a network cable to the base, it will flash.

There are three cases.

If the network LED lights up solidly, it means that the base station has successfully connected to the network. You can register a handset to the base station, after which all LEDs should be lit solidly.
If the network LED does not light up at all, try a hard reset of the base station.
If the network LED flashes continually, it means that the base station cannot get an IP address.

Try connecting the network cable to another port on the switch, if the network LED continues to flash, try a hard reset.

If this does not resolve the issue, it may be a hardware issue.

Do the Yealink DECT handsets support Auto Answer?

The auto answer feature for Yealink DECT phones only works when the phone is placed in its charging cradle. When auto answer feature is enabled, you can simply answer the incoming calls by lifting the handset from the charging cradle To configure auto answer:

Press OK to enter the main menu.
Select Settings → Telephony → Auto Answer
Press Change to check or uncheck the Auto Answer checkbox.

Why is there a click sounds when I am busy on a call?

When a DECT repeater is installed in the environment, the system produces a verification tone to confirm that the handset is operational in the extended range. You can activate/deactivate the verification tone on the Repeater by following these steps:

Switch off the repeater (disconnect the power adapter).
Switch it on for 1 to 5 seconds and switch it off again.
Switch it on again. The LED indicator on the repeater flashes slowly.
Switch it off again.
Switch it on again.

My handset is unable to receive a call.

Check the assignment rule under Account → Number Assignment. Ensure that the extension has been assigned to the handset under the incoming call rule.

How do you set the DECT handset to Silent Mode?

Press and hold the “*” button to set the handset to silent mode. To enable normal mode, press and hold the “*” button.

How do you access the web user interface on the Yealink DECT Base Stations?

Connect the base station to the network and power. Register a handset to the base station. Use the handset to locate the IP Address: Handset menu → Status → Base Enter this IP address in your web browser.

What headsets are compatible with the Yealink DECT handsets?

The Yealink W52P handset uses a 2.5mm headset jack. However, this is a non-standard interface and requires special headsets. Please purchase 2.5mm headsets in the following standard (MONO/Dual MONO).

The Yealink W53H and W56P handsets uses a 3.5mm headset jack and supports all CTIA Standard headsets.

Can I Use Handsets from Other Brands with Base from Yealink DECT?

All Yealink DECT products use the CAT-iq 2.0 standard. However, to enhance the feature set of the Yealink phone, there have been some modifications to the standard.

You may be able to register other handsets to the Yealink DECT base stations, but all of the features may not be available.

You may be able to register Yealink DECT handset to other base stations, but all of the features may not be available.

It is recommended that only Yealink handsets and Yealink base stations be used together to ensure optimal performance.

How do you upgrade W52H, W53H and W56H Handset Firmware?

During the upgrade process, it is advisable to place the handset in the charging cradle and closer (within 10 meters) to the base station. While the handset is busy upgrading, you will not be able to use any of the features of the phone.

A firmware upgrade can take approximately 25 minutes. Do not cancel the upgrade or turn off the device during the process.

After completing the firmware upgrade and reboot, the handset should register automatically with the base station. If it does not register, please perform a manual re-registration.

Before upgrading W52H/W56H/W53H handset firmware, please ensure the following: The handset must be registered on the base station and within the radio coverage of the base station.

There are no external calls in progress on the base station, this includes handsets that are not about to be upgraded. The handset battery has at least 50% charge in order to finish the firmware upgrade.

Manual Upgrade

Go to the web GUI of the base station, click on Settings  Upgrade. In the Select and Upgrade Handset Firmware block, click Browse to the handset firmware file on your PC.

Click Upgrade to trigger the update. A dialog box pops up to prompt “Handset Firmware of the SIP Phone will be updated. It will take 10 minutes to complete. Please don’t power off!”.

Click OK to confirm the upgrade. The web user interface prompts “Handset Firmware updating. Please wait and do not power off. And the browser must not be closed or refreshed!”.

All handsets registered to the base station will perform the upgrade if they meet the conditions listed above. While upgrading the handset will display a progress bar with the status on the LCD screen. The handset will reboot, and the message key LED flashes red after completing the upgrade.

If a handset fails to upgrade successfully, the LCD screen will display “Upgrade fails, please upgrade again”. After a short while, the handset will attempt to perform the upgrade automatically.

How do you reset a Yealink handset to factory default setting?

Deregister handset from Base station: Press “OK” button → Navigate to “Settings” → “Registration” → “De-reg.Handset” → Enter Pin “0000” to confirm Deregistration. After specifying your handset, press “Select” → the Message “De-Register” appears Press “Yes” to delete registration from base.

Reset Handset Settings Press “OK” button → Navigate to “Settings” → “System Settings” → “Handset Reset” → Select “OK”. The Message “Reset Handset to default” appears, Press “Enter” and insert Pin code “0000”. Press “Yes” to confirm.

What is the call concurrency per base station?

The Yealink W52P can handle up to 4 simultaneous calls (including internal calls). The Yealink W53P and W60P can handle up to 8 simultaneous calls (including internal calls).

How many repeaters can be registered per base station?

The Yealink RT30 can have a maximum of 6 repeaters connected per base, with a maximum of 2 repeaters cascaded.

How many handsets can be registered per base station?

The Yealink W52P can support up to 5 handsets. The Yealink W53P and W60P can support up to 8 handsets.

How do you synchronise features between the BroadWorks platform and Yealink phones?

Ensure that you download the Broadsoft custom firmware which can be found here: https://www.yealink.com/products_47.html

With the Broadsoft firmware installed, enable the XSI and feature sync option by setting the following auto provisioning parameters: bw.feature_key_sync =1 bw.enable =1

Do Yealink IP phones support IAX?

IAX (Inter-Asterisk eXchange) is an Asterisk private protocol and as such in not supported by Yealink devices.

How do I enable Picture Caller-ID for colour screen phones?

In order to have a picture show when you receive a call from a specific number, you will need to load a photo on the server and add then ass a SIP Header to the invite packet, with the instruction to fetch the relevant photo from the web share.

The instruction should look like this:

SIPAddHeader: Call-Info: <http://10.3.5.80:8080/image/girl2.png>;purpose=icon Caller-Image: <http://10.3.15.56/TFTP/111.png>

The phone needs to be configured as follows:

account.X.picture_info_enable =1

What is the Call Concurrency on the Yealink Conference phones?

The Yealink CP920 and CP930W can handle a 5-way conference call.

The Yealink CP960 can handle a 50-way conference call.

What is the power supply specifications for the Yealink Conference phones?

The Yealink CP920 and CP930W come with an included PSU, AC 100~240V input, and DC 12V/1A output.

The Yealink CP960 does not include a PSU and should be powered by POE. It can make use of a PSU with the following specifications: AC 100~240V input and DC 12V/1A output.

Can a conference phone be used to play music?

Yes, you can connect your mobile phone to you conference phone via Bluetooth and enable the Media audio feature to allow music to be played through your conference phone.

Once you have connected your mobile phone via Bluetooth, follow these steps to enable the media audio feature:

For CP920 and CP930W:

Menu → Settings → Basic Settings → Bluetooth → Paired Bluetooth Devic → Option → Detail → Channel Control → Media Audio.

How do you reset a Yealink IP Phone to factory default settings?

Method 1: via web interface..

Method 2: Via phone menu.

Go to Settings → Advanced UI, enter the password to continue. Select Reset to Factory option.
The LCD screen will prompt you with: “Warning, Reset to Factory Setting”. Press OK to continue.

Method 3: Hard reset on the device

Press and hold the “OK” button for about 20 seconds.

Note: The phone can take a few minutes to reset to factory default settings. Ensure that the device does not lose power during this time or it may cause damage to the phone’s software.

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Yealink SIP-T46S/T46U Screens, Keys Layout, and Quick User Guide
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Yealink SIP-T53/T53W Keys Layout, Idle Screen, and Quick User Guide
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Auto Redialing
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Yealink SIP-T57W Keys Layout, LED status, Touch Screen, Quick Guide
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Yealink SIP-T54/T57 Rebooting, Updating Firmware/Configuration, Factory Reset
Yealink T54W/T57W – Web User Interface Access/Connectivity Troubleshooting
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Yealink T54/T57 Wi-Fi Network Connection and Management
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Yealink VP59 Keys Layout, Touch Screen Functions, and Quick User Guide
Yealink SIP-T58A Keys Layout, Touch Screen Functions, and Quick Guide
Yealink T58W/VP59 – Registering and Switching SIP Accounts
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Yealink T58W/VP59 – Call Forwarding and Diverting
Yealink T58W/VP59 – Conference Calling (Local, Hybrid UC Meeting, Network)
Yealink T58W/VP59 – Do Not Disturb and Silent Mode
Yealink T58W/VP59 – Hold and Resume
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Yealink T58W/VP59 – Parking and Retrieving a Call
Yealink T58W/VP59 – Voicemail Access, PIN, Configuration, and Prompts
Yealink CP925 – Keys, Screens, Mute LEDs Status, and Ports
Yealink CP965 – Keys, Screens, Mute LEDs Status, and Ports
Yealink CP925/965/935W – Rebooting, Updating Firmware/configuration, Factory Reset
Yealink CP925/965/935W – Web User Interface Access/Troubleshooting
Yealink CP925/965/935W – Connecting and Using Mobile Phone via Bluetooth
Yealink CP925/965/935W – Network Diagnostics (Ping/Trace Route)
Yealink CP925/965/935W – Wi-Fi Network Connection
Yealink CP925/965/935W – Manual Network Configuration (Static IP)
Yealink CP925/965/935W Anonymous Calls – Configure, Dial, or Reject
Yealink Yealink CP925/965/935W – Blocking Calls With the Blocklist Directory
Yealink CP925/965/935W – Call Forwarding and Diverting
Yealink CP925/CP925/965/935W – Call the Last Incoming Number, Auto Redial, and Call Completion
Yealink CP925/965/935W – Call Transfer (Attended/Semi-Attended/Blind/BLF)
Yealink CP925/965/935W – Conference Calling (Local, Hybrid UC Meeting, Network)
Yealink CP925/965/935W – Do Not Disturb, Manual Call Rejection, and Silent Mode
Yealink CP925/965/935W – Hold and Resume
Yealink CP925/965/935W – Intercom Calls
Yealink CP925/965/935W – Mute and Keep Mute
Yealink CP925/965/935W – Parking and Retrieving Calls
Yealink CP925/965/935W – Recording a Call
Yealink CP925/965/935W – Voicemail Access, PIN, Configuration, and Prompts
Yealink CP935W – Keys, Screens, LEDs statuses, Ports, and Quick Guide
Yealink CP935W – Charging, Power Status, and Power Saving Mode
Yealink CP935W – DECT Registration, Renaming, and Locating the Phone
Yealink CP935W – DECT Intercom Calls With Other Base Station Handsets/Phones
Yealink IP DECT W56P/56H Keys Layout, Base Station Description, and Quick User Guide
Using the W56H/73H/78H Handset and DD10K Dongle With a SIP-T5 Deskophone
Yealink W73P/76P/78P – Handset Registration, Renaming, and Locating
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Yealink W73P/76P/78P Anonymous Calls – Configuring, Dialing, and Rejection
Yealink W73P/76P/78P – Call Forwarding
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Yealink W73P/76P/78P – Conference Calls
Yealink W73P/76P/78P – Do Not Disturb and Silent Mode
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Yealink W73P/76P/78P – Muting a Call
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W73P/76P/78P – Redialing Recent Numbers and Speed Dial
Yealink W73P/76P/78P – Voicemail Access, PIN, Configuration, and Prompts
Yealink W78H – Using a Bluetooth Headset
Yealink W80/W90 – Enabling Handset Registration Mode
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What Are Telephone System Features for Poly Phone?
Call Forwarding Dial Code
Poly VVX 301/311 Quick User Guide and Keys Layout
Poly VVX 301/311 Phone Views (Home, Lines, Calls)
Poly VVX 301/311 Restarting, Updating Firmware/Configuration, Factory Reset
Poly VVX 301/311 Web Configuration Utility Access and Troubleshooting
Poly VVX 301/311 – Hold and Resume
Poly VVX 301/311 – Mute
Poly VVX 301/311 – Call Transfer (Consultative/Blind)
Poly VVX 301/311 – Do Not Disturb
Poly VVX 301/311 – Call Forwarding and Diverting
Poly VVX 301/311 – Conference Calling
Poly VVX 301/311 – Voicemail Indicators, Access, and Voice Prompts
Poly VVX 301/311 – Parking and Retrieving a Call
Poly VVX 301/311 – Using Your Phone as an Intercom
Poly VVX 301/311 – Blocking Calls with Auto Reject
Poly VVX 401/411 Quick User Guide and Keys Layout
Poly VVX 401/411 Restarting, Updating Firmware/Configuration, Factory Reset
Poly VVX 401/410 Web Configuration Utility Access and Troubleshooting
Poly VVX 401/411 – Phone Views (Home, Lines, Calls)
Poly VVX 401/411 – Hold and Resume
Poly VVX 401/411 – Mute
Poly VVX 401/411 – Call Transfer (Consultative/Blind)
Poly VVX 401/411 – Do Not Disturb (DND)
Poly VVX 401/411 – Call Forwarding and Diverting
Poly VVX 401/411– Conference Calling
Poly VVX 401/411 – Voicemail Indicators, Access, and Voice Prompts
Poly VVX 401/411 – Parking and Retrieving a Call
Poly VVX 401/411 – Using Your Phone as an Intercom
Poly VVX 401/411 – Blocking Calls with Auto Reject
Poly VVX 601 Quick User Guide and Keys Layout
Poly VVX 601 Phone Views – Home, Calls, Lines, Active Call
Poly VVX 601 Restarting, Updating Firmware/Configuration, Factory Reset
Poly VVX 601 Web Configuration Utility Access and Troubleshooting
Poly VVX 601 – Hold and Resume
Poly VVX 601 – Mute
Poly VVX 601 – Call Transfer (Consultative/Blind)
Poly VVX 601 – Do Not Disturb
Poly VVX 601 – Call Forwarding and Diverting
Poly VVX 601 – Conference Calling
Poly VVX 601 – Voicemail Indicators, Access, and Voice Prompts Map
Poly VVX 601 – Using Your Phone as an Intercom
Poly VVX 601 – Parking and Retrieving a Call
Poly VVX 601 – Blocking Calls with Auto Reject
Poly VVX 250 Keys Layout and Quick User Guide
Poly VVX 350 Quick User Guide and Keys Layout
Poly VVX 450 Quick User Guide and Keys Layout
Poly VVX 250/350/450 Screens – Main Menu, Calls Screen, and Lines Screen
Poly VVX 250/350/450 Restarting, Updating Firmware/Configuration, and Factory Reset
Poly VVX 250/350/450 Web Configuration Utility Access and Troubleshooting
Transferring Calls (Consultative/Blind)
Poly VVX 250/350/450 – Call Forwarding and Diverting
Poly VVX 250/350/450 – Conference Calling
Voicemail Access, Indicators, and Prompts Map
Blocking Calls with Auto Reject
Placing an Intercom Call
Poly Trio C60 Keys Layout, Status Icons, and Quick User Guide
Poly Trio 8800 Keys Layout, Status Icons, and Quick User Guide
Poly Trio C60/8800 Main Screens – Home, Calls, Make a Call
Poly Trio 8300 Keys Layout and Quick User Guide
Poly Trio 8300 Main Screens – Home, Main Menu, Calls, Make a Call
Poly Trio Web Configuration Utility Access and Troubleshooting
Poly Trio – Restarting, Updating Firmware/Configuration, Factory Reset
Poly Trio – Connecting a Mobile Phone/Device via Bluetooth/NFC
Poly Trio – Do Not Disturb
Poly Trio – Holding and Resuming Calls
Poly Trio – Mute a Call
Poly Trio – Call Transfer
Poly Trio – Voicemail Access, Opions, and Voice Prompts
Poly Trio – Intercom Calls
Poly Trio – Auto Answer
Poly Trio – Conference Call
Poly Trio – Recording Calls
Poly Trio – Call Forwarding
How to Auto-Provision a Yealink Phone
Physical Provision (End-User) for Polycom VVX Phones
Cisco 504G/508G Quick User Guide and Keys Layout
Cisco 525G Quick User Guide and Keys Layout
Call Transfer (Attended)
Blind Transfer
Call Forwarding
Conference Call
Listening to Voicemail
Konftel 300Wx Keys Layout and Quick Guide
Rebooting, Updating Firmware, Factory Reset
Web Interface Access
Registration With a DECT Base Station
Making and Recording Conference Calls
Conference Recording
Yealink CP930 (Discontinued) – Registration, Renaming, and Locating the Phone
Yealink CP930 (Discontinued) – Connecting a Mobile Phone/Device via Bluetooth
Yealink CP930 (Discontinued) Keys Layout, Screens, Ports, and Quick User Guide
Accessing the Yealink CP930 (Discontinued) Web User Interface
Yealink CP930 (Discontinued) – Holding and Resuming Calls
Yealink CP930 (Discontinued) – Mute
Yealink CP930 (Discontinued) – Do Not Disturb
Yealink CP930 (Discontinued) – Voicemail Configuration, Access, PIN, and Prompts
Yealink CP930 (Discontinued) – Intercom Calls With Other Base Station Handsets
Yealink CP930 (Discontinued) – Call Transfer
Yealink CP930 (Discontinued) Conference Call (Local, Hybrid UC Meeting, Network)
Yealink CP930 (Discontinued) – Recording a Call
Yealink CP930 (Discontinued) – Call Forwarding
Yealink CP930 (Discontinued) – Parking and Retrieving a Call
Yealink CP930 (Discontinued) – Anonymous Calling
Yealink CP930 (Discontinued) – Blocking Calls With the Blocklist Directory
Enabling Do Not Disturb
Setting up a Three Way Conference Call
Restarting Your Phone
Forwarding Calls
Transferring a Call
Assigning Speed Dial Indexes
Selecting a Ring Tone Type for Lines and Contacts
Adding, Deleting, and Editing Contacts
Diverting calls
Yealink T42G Quick User Guide and Keys Layout
Accessing the Yealink T42G Web User Interface
Call Transfer (Attended/Semi-Attended)
Voicemail Access and Configuration
Yealink CP960 (Discontinued) Keys, Touch Screen Functions, Ports, and Keys Layout
Yealink CP960 (Discontinued) – Web User Interface Access/Connectivity Troubleshooting
Yealink CP960 (Discontinued) – Rebooting, Updating Firmware/configuration, Factory Reset
Yealink CP960 (Discontinued) – Connecting a Mobile Phone/Device via Bluetooth
Yealink CP960 (Discontinued) – Wi-Fi Network Connection
Yealink CP960 (Discontinued) – Manual Network Configuration (Static IP Address)
Yealink CP960 (Discontinued) – Hold and Resume
Yealink CP960 (Discontinued) – Mute
Yealink CP960 (Discontinued) – Do Not Disturb and Silent Mode
Yealink CP960 (Discontinued) – Voicemail Access, PIN, Configuration, and Prompts
Yealink CP960 (Discontinued) – Using Your Phone as an Intercom
Yealink CP960 (Discontinued) – Call Transfer (Attended/Semi-Attended/Blind/BLF)
Yealink CP960 (Discontinued) – Call Forwarding
Yealink CP960 (Discontinued) – Conference Calling (Local, Hybrid UC Meeting, Network)
Yealink CP960 (Discontinued) – Recording a Call
Yealink CP960 (Discontinued) – Parking and Retrieving a Call
Yealink CP960 (Discontinued) – Auto Redialing
Yealink CP960 (Discontinued) – Making or Rejecting Anonymous Calls
Hosting Conference Calls
Call Transfering
Forwarding calls
Selecting a Ring Tone
Hosting Three Way Conference Calls
Text Messaging From Your Phone
Selecing a Ring Tone
Yealink DECT W59R Keys Layout, Idle Screen, and Main Menu
Yealink DECT W59R Rebooting, Updating Firmware/Configuration, Factory Reset
Yealink DECT W59R Web User Interface Access/Connectivity Troubleshooting
Yealink W59R Handset Registration and Renaming
Yealink W59R – Using a Bluetooth Headset
Using the W59R Handset/DD10K Dongle With a Deskphone
Yealink W59R – Hold and Resume
Yealink W59R – Mute
Yealink W59R – Do Not Disturb and Silent Mode
Yealink W59R – Voicemail Access, PIN, Configuration, and Prompts
Yealink W59R – Call Transfer (Blind, Attended, and Semi-Attended)
Yealink W59R – Call Forwarding
Yealink W59R – Conference Call
Yealink W59R – Making or Rejecting Anonymous Calls
Yealink W59R – Redialing Numbers
Yealink W59R – Intercom Calls Between Handsets
Yealink DECT W52P/52H Keys Layout, Base Station, and Quick User Guide

Handset Registration

Accessing the Yealink DECT W52P Web User Interface
Yealink DECT W52P Restarting, Updating Firmware, Factory Reset
Voicemail Configuration and Access
Call Transfer (Attended and Semi-Attended)
Making or Rejecting Anonymous Calls
Intercom Calls Between Handsets
Cisco 7960 Factory Reset and Provision
Poly SoundStaion 6000 (Discontinued) – Keys Layout
Poly SoundStaion 6000 (Discontinued) – Mute
Poly SoundStaion 6000 (Discontinued) – Hold and Resume
Poly SoundStaion 6000 (Discontinued) – Do Not Disturb
Poly SoundStaion 6000 (Discontinued) – Voicemail Access
Poly SoundStaion 6000 (Discontinued) – Call Transfer (Consultative and Attended)
Poly SoundStaion 6000 (Discontinued) – Blind Transfer
Poly SoundStaion 6000 (Discontinued) – Call Forwarding
Poly SoundStaion 6000 (Discontinued) – Hosting Conference Calls
Provisioning Cisco SPA Devices
Poly SoundStaion IP 7000 Keys Layout
Voicemail Access
Call Transfer (Consultative and Attended)
Yealink CP860 Phone and Extension Microphone Keys Layout
Accessing the Yealink CP860 Web User Interface
Making or Rejecting Anonymous Call
Prohibited Use of Telebroad APIs
Telebroad REST API Functions and Descriptions
How to use REST API Requests?
Unix Time Format Usage in Rest API Methods
DELETE/contact
DELETE/fax/messages
DELETE/mailbox/greeting
DELETE/phone/cdrs
DELETE/sms/conversation
DELETE/speedial
DELETE/voicemail/file
GET/active/calls
GET/call/flow
GET/call/history
GET/call/recording
GET/calls/recent
GET/contact and GET/contacts
GET/contacts/export
GET/download/mailbox/greeting
GET/fax/messages
GET/fax/message
GET/mailbox
GET/messages/unread
GET/my/calls/ringing
GET/my/huntgroups
GET/myProfile
GET/nextSpeedDial
GET/pbx/logs
GET/pbx/logs/csv
GET/phone/cdrs
GET/phone/destinations
GET/sms/conversation
GET/sms/conversations
GET/sms/lines
GET/speeddials (results also include BLF)
GET/Voicemail
GET/voicemail/file
POST/call/hangup
POST/call/pickup
POST/call/redirect
POST/push/login
POST/push/logout
POST/send/call
POST/send/fax
POST/send/sms
POST/voicemail/call
PUT/contact
PUT/mailbox
PUT/messages/read
PUT/myStatus
PUT/phone/dnd
PUT/phone/forwarding
PUT/Speeddial (use also for BLF)
Using REST API and PubNub for Realtime Push Notifications
Prefix Added
Chrome person login issue
Uncheck Box
Password change
Cameras on the sames internet
Generic Static Calls (agents)
Calls coming from Router (agents)
Pre-configure a Router
Adblock Plus impacts Telebroad Chrome Apps
Changing Names of Phone Lines and Extension
Servers and backups
Enabling Base Station Registration Mode

Initial Registration (Easy and Normal Methods)

Registering with Other Base Stations

Switching Connection Between Base Station

Renaming the Handset

Renaming the Base Station

Deregistering a Handset

Locating Phones/Handsets and Testing Registration

To use the DECT connectivity of the W73H/56h/78H handsets it has to be registered with a Yealink base station. One W70B base station can handle up to ten DECT phones and handsets.

You can register a handset with four different standard (single-cell) W70B base stations if you need to move it around your office. DECT repeaters (up to six) can be used to extend the reception range of the W70B. For even greater coverage and freedom of movement, you can use the multi-cell Yealink W80B/W90B base stations that can manage a phone/handset across up to 60 base stations (or even up to 600 in special VIM configuration).

If you have purchased the 73P/76P/78P bundle (handset and a base station) the handset should have already been registered with the included W70B base station. If bought separately or for registering to other base stations, a manual registration is required, as explained below .

Enabling Base Station Registration Mode To register your W73H/56h/78H handset, your base station needs to be set to registration mode. To enable registration mode on a base station:

After you enable registration mode on the base station you can register your handset with it.

If the handset has not yet been registered with any base station, you do an initial registration using the easy or normal methods. Otherwise, you can register it to a different base station (see next ) or switch between the ones you already registered to (see below ).

For initial handset registration do one of the following:

Easy Registration – the handset will search and automatically register with a base station that is in registration mode. For easy registration press the Reg soft key on the handset. The registration process will be completed automatically. If you are working with a multi-cell system (Yealink W80 or W90), the handset will register to the base station with the strongest signal in range.

If registered successfully, the screen prompts “Handset Subscribed” and “Base NO. (last 4 characters of connected Base’s MAC address).”

After the handset is initialized, the idle screen will show the internal device number of the handset on the base station. In the example shown here the W78H is registered as "Handset 2" on the base station. The next registered DECT handset/phone will be assigned as Hanset 3.

If the registration fails it may be due to an incorrect base PIN (check with your system administrator for the correct one), the base station is out of range (move closer to it), or the base station is not in registration mode (see above .)

If you made an initial registration to a base station, the above easy/normal methods are no longer applicable. Instead, you can use the settings menu to register to another base station(s). Make sure the other base station(s) is in registration mode.

To register the handset to a different base station:

Select Registration > Register Handset .
A list of available base stations will be shown. Select the one you want to register to and e nter the base station's PIN (the default PIN is 0000).
Press Done to complete the registration.

If registered successfully, the screen prompts “Handset Subscribed” and “Base NO. (last 4 characters of connected Base’s MAC address).” After the handset is initialized, the idle screen will show the new internal device number of the handset on the base station.

Switching Connection Between Base Station

If you registered a handset with more than one base station you can manually switch the connection between them or automatically select the one with the strongest signal.

To switch connection between base stations:

Select Registration > Select Base.
The screen will display all the base stations that the handset is registered with and the BestBase option
Select a base station you want to switch to or select BestBase to automatically pick the one with the strongest signal.

The handset is named automatically during the initial base station registration but you can rename and personalize it.

To rename the handset:

Select Handset Name .
Edit the name in the Rename field.
Press the Save soft key to confirm the new name.

The handset name is also configurable via the web user interface at the path: Account > Handset Name .

Once you have registered with a base station you can rename it to make it easier to discern. Renaming may not be available on a multi-cell configuration!

To rename a base station:

Select Registration > Select Base .
Select the base you want to rename and press Rename . (Do not select the Bestbase option as it is used for automatically selecting the strongest signal.)
Enter the desired name in the Rename field and confirm the change.

There may be occasions, such as if you are replacing the base station, when you need to discard the handset registration.

You can use any registered handset to deregister any of the other handsets on a base station.

To deregister the handset:

select Registration > De-reg. Handset .
Enter the base PIN (default PIN is 0000).
The screen will list the handsets that are registered to the selected base station. The name of the handset you are using is highlighted.
Select the desired handset to deregister and press OK .
Confirm the action when prompted.

You can also deregister a handset via the web user interface at the path: Status > Handset&VoIP > Delete Handset .

Locating a Handset

If you are using the W70B single-cell base station you can locate a misplaced registered handset/phone by paging it from the base station.

To locate a handset:

All the handsets that are registered with the base station will ring (get paged) simultaneously and display the IP address of the base station.

You can also locate handsets via the web user interface at the path Status > Handset&VoIP > Paging Status .

Articles in this folder

DECT Phones
Conference Phones
Teams Rooms System
Zoom Rooms System
Room System Accessories
Room Scheduling
USB Cameras & BYOD Kits
Teams Phones
Zoom Phones
Speakerphones
Bluetooth Wireless Headsets
DECT Wireless Headsets
Wired Headsets
USB Cameras
Wireless Presentation
Room Sensor
Device Management Platform (YDMP)
Management Cloud Service (YMCS)
USB Connect Management
Teams Phone
Live Demo Service
Ceiling Device Calculator
Room Configurator
Zoom Meetings
RingCentral Rooms
RingCentral Phone
Manufacturing
Future Workers
Headset&Handset
Personal Collaboration
Desktop Video
3CX Solution
Extron Solution
BroadSoft Solution
Metaswitch Solution
BlueJeans Solution
Support Home
Submit a Ticket
Knowledge Base
Apply for License
Maintenance
Partner PrimeCare Service
Headset Compatibility
Headset Resource Center
Certification Portal
Learning Center
Training List
Security&Compliance
Security Advisories
Security Support Period
End-of-Life Policy

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Yealink Manuals
User manual

Yealink SIP-T27P User Manual

User manual (208 pages)
Quick start manual (11 pages)
Administrator's manual (898 pages)
page of 193 Go / 193

Troubleshooting, about this guide.

Hardware Component Instructions
Product View
Icon Instructions
LED Instructions
Line Key LED
Line Key LED (Configured as a BLF Key or BLF List Key)
Line Key LED (Used as a Page Switch Key)
Line Key LED (Associated with a Bridged Line)
Line Key LED (Associated with a Shared Line)
Two Ways to Customize Configurations of Your SIP-T27P IP Phone
User Interfaces
Web User Interface
Documentations
Packaging Contents

Getting Started

Phone Installation
Phone Initialization
Phone Status
Basic Network Settings
Registration
Idle Screen
Optional Accessories
Desk Mount Method
Wall Mount Method
Power over Ethernet
Automatic Phone Initialization
DHCP (Dynamic Host Configuration Protocol)
To View the Phone Status Via Phone User Interface
To View the Phone Status Via Web User Interface
To Configure the IP Mode Via Phone User Interface
To Configure a Static Ipv4 Address Via Phone User Interface
To Configure a Static Ipv6 Address Via Phone User Interface
To Configure Pppoe Via Phone User Interface
Entering Data and Editig Fields
To Enter or Edit Data

Customizing Your Phone

Time & Date
To Change the Language for the Phone User Interface
To Change the Language for the Web User Interface
To Configure the SNTP Settings Via Phone User Interface
To Configure the Time and Date Manually Via Phone User Interface
To Configure the Date and Time Format Via Phone User Interface
Administrator Password
Key as Send
To Activate the Phone Lock Via Phone User Interface
To Change the Phone Unlock PIN Via Phone User Interface
To Unlock the Phone Via Phone User Interface
To Deactivate the Phone Lock Via Phone User Interface
Audio Settings
To Adjust the Volume When the Phone Is Idle
To Adjust the Volume When the Phone Is During a Call
To Select a Ring Tone for the Phone Via Phone User Interface
To Select a Ring Tone for the Account Via Phone User Interface
To Upload a Custom Ring Tone for Your Phone Via Web User Interface
Contact Management
To View the Directory Via Phone User Interface
To Add a Group to the Local Directory
Editing Groups
Deleting Groups
Adding Contacts Manually
Editing Contacts
Adding Contacts from Call History
Adding Contacts from Remote Phone Book
Deleting Contacts
Placing Calls to Contacts
To Search for a Contact in the Local Directory
Search Source List in Dialing
To Configure Search Source List in Dialing Via Web User Interface
Importing/Exporting Contact Lists
To Search for an Entry in the Enabled Search Source Lists
To Import an XML Contact List File Via Web User Interface
To Import a CSV Contact List File Via Web User Interface
To Export a Contact List Via Web User Interface
To Add a Contact to the Blacklist Directory Manually
To Add a Contact to the Blacklist Directory from the Local Directory
Configuring an Access URL
Accessing the Remote Phone Book
Searching for Contacts
To Place a Call from the Remote Phone Book
Call History Management
Incoming/Outgoing Call Lookup
To Disable History Record Via Phone User Interface
To View Call History
To Place a Call from the Call History List
To Add a Contact to the Local Directory from the Call History List
System Customizations
Logo Customization
To Delete an Entry from the Call History List
To Delete All Entries from the Call History List
To Activate the Headset Mode
Headset Prior
To Deactivate the Headset Mode
Dual Headset
To Assign Functionality to a Line Key Via Phone User Interface
To Configure the Page Tips Feature Via Web User Interface
Direct Pickup
Group Pickup
Local Group
XML Browser
Group Listening
Programmable Keys
Phone Lock Key Feature
Directory Key Feature
Switch Account up
Switch Account down
Account Management
Account Registration
Single Account
Multiple Accounts
To Disable an Account Via Phone User Interface
Multiple Line Keys Per Account
Replace Rule
Basic Expression Syntaxes You Need to Know
To Add a Replace Rule Via Web User Interface
To Edit a Replace Rule Via Web User Interface
To Delete One or more Replace Rules Via Web User Interface
Delay Time for Dial-Now Rule
To Configure the Delay Time for Dial-Now Rule Via Web User Interface
To Configure the Area Code and Lengths Via Web User Interface
To Add a Block out Number Via Web User Interface
Emergency Number
To Specify Emergency Numbers Via Web User Interface
Live Dialpad

Basic Call Features

To Place a Call Using the Handset
To Place a Call Using the Hands-Free Speakerphone Mode
To Place a Call Using the Headset
To Place Multiple Calls
Answering Calls
Answering When Not in Another Call
To Answer a Call Using the Hands-Free Speakerphone Mode
To Answer a Call Using the Handset
Answering When in Another Call
Ending Calls
Redialing Numbers
To Redial the Last Dialed/A Previously Dialed Number from Your Phone
To Enable Recent Call in Dialing Via Web User Interface
To View Placed Calls List When the Phone Is on the Pre-Dialing Screen
Auto Answer
Auto Redial
Call Completion
Call Hold/Resume
Do Not Disturb (DND)
To Configure the DND Mode Via Web User Interface
To Activate DND in Custom Mode for a Specific Account
To Activate DND in Phone Mode
To Activate DND in Custom Mode for All Accounts
Call Forward
Static Forwarding
To Configure the DND Authorized Numbers Via Web User Interface
To Enable Call Forward in Phone Mode
To Enable Call Forward in Custom Mode
To Configure the Forward Authorized Numbers Via Web User Interface
To Disable Call Forward in Custom Mode for a Specific Account
To Disable Call Forward in Phone Mode
Call Transfer
Dynamic Forwarding
To Perform a Blind Transfer
To Perform a Semi-Attended Transfer
To Perform an Attended Transfer
Conference/Local Conference
During the Conference Call, You Can Do the Following Actions
To Join Two Calls in a Conference
To Set up a Local Conference Call
Network Conference
To Configure Network Conference Via Web User Interface
To Set up a Network Conference Call
Directed Call Pickup
Group Call Pickup
To Pick up a Call Directly
To Pick up a Call in the Group
Anonymous Call
Anonymous Call Rejection

Advanced Phone Features

Busy Lamp Field (BLF)
To Configure a BLF Key Via Phone User Interface
Call Recording
Hot Desking
Multicast Paging
Music on Hold
To Enable Visual and Audio Alert Features Via Web User Interface
To Configure BLF List Settings Via Web User Interface
To Configure a Record Key Via Phone User Interface
To Configure a URL Record Key Via Phone User Interface
Hop Desking
Recording Status Indicators You Need to Know
To Configure a Hot Desking Key Via Phone User Interface
To Record a Call
To Use Hot Desking
Incoming Intercom Calls
Outgoing Itercom Calls
Accept Intercom
Intercom Features You Need to Know
Intercom Mute
Intercom Tone/Intercom Barge
Sending RTP Stream
To Configure Intercom Features Via Phone User Interface
Using Intercom
To Configure a Paging List Key Via Phone User Interface
To Configure Paging List Via Phone User Interface
To Delete a Paging Group Via Phone User Interface
Receiving RTP Stream
Paging Barge
Paging Priority Active
To Configure Multicast Listening Addresses Via Web User Interface
Using Multicast Paging
To Configure Music on Hold Server Via Web User Interface
Automatic Call Distribution (ACD)
To Configure an ACD Key Via Phone User Interface
To Log into the ACD System
Shared Call Appearance (SCA)
Configuring SCA Feature on the IP Phone
Configuring Private Hold Soft Key or Private Hold Key
Configuring Call Pull Feature
To Place a Call on the Shared Line
To Place Multiple Calls on the Shared Line
Using SCA Feature on the IP Phone
To Answer a Call on the Shared Line
To Answer Multiple Calls on the Shared Line
To Place a Call on Public Hold
Retrieving a Held Call
To Place a Call on Private Hold
Barging in an Active Call
Bridged Line Appearance (BLA)
Configuring BLA Feature on the IP Phone
To Place a Call on the Bridged Line
Using BLA Feature on the IP Phone
Answering Calls (BLA)
To Place Multiple Calls on the Bridged Line
Placing a Call on Hold
To Retrieve the Held Call
Short Message Service (SMS)
To Read a Text Message
To Reply a Text Message
To Send a Text Message
To Delete a Text Message
To Configure Voice Mail Access Codes Via Phone User Interface
To Leave a Voice Mail
Message Waiting Indicator (MWI)
To View the Voice Mail Via Phone User Interface
The MWI Subscription Parameters You Need to Know
To Configure Subscribe for MWI Via Web User Interface
To Enable Subscribe MWI to Voice Mail Via Web User Interface

Quick Links

Troubleshooting 177
Call Issues 179

Related Manuals for Yealink SIP-T27P

IP Phone Yealink SIP-T48G Administrator's Manual

Summary of Contents for Yealink SIP-T27P

Page 2 Copyright © 2016 YEALINK NETWORK TECHNOLOGY CO., LTD. Copyright © 2016 Yealink Network Technology CO., LTD. All rights reserved. No parts of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, photocopying, recording, or otherwise, for any purpose, without the express written permission of Yealink Network Technology CO., LTD.
Page 3 Do not dispose of WEEE as unsorted municipal waste and have to collect such WEEE separately. We are striving to improve our documentation quality and we appreciate your feedback. Email your opinions and comments to [email protected].
Page 4 Yealink SIP-T27P IP phone firmware contains third-party software under the GNU General Public License (GPL). Yealink uses software under the specific terms of the GPL. Please refer to the GPL for the exact terms and conditions of the license. The original GPL license, source code of components licensed under GPL and used in Yealink products can be downloaded online: http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=293&CateId=293.
Page 5 About This Guide Thank you for choosing the SIP-T27P IP phone, exquisitely designed to provide business telephony features, such as Call Hold, Call Transfer, Busy Lamp Field, Multicast Paging and Conference over an IP network. This guide provides everything you need to quickly use your new phone. First, verify with your system administrator that the IP network is ready for phone configuration.
Page 6 Table of Contents Troubleshooting on page  Major updates have occurred to the following sections: Backlight on page  Contrast on page  Ext Keys on page  The following sections are new: Shared Call Appearance (SCA) on page  Bridged Line Appearance (BLA) on page ...

Page 7: Table Of Contents

Page 8: table of contents, page 9: table of contents.

Page 10 User Guide for the SIP-T27P IP Phone Appendix A - Time Zones ............179 Index ..................181...

Page 11: Overview

Page 12 User Guide for the SIP-T27P IP Phone Hardware component instructions of the SIP-T27P IP phone are: Item Description Shows information about calls, messages, soft keys, time, date and other relevant data: • Call information—caller ID, call duration • Icons (for example, ①...
Page 13 ⑰ Hookswitch Tab Yealink Wall how to adjust the hookswitch tab, refer to Mount Quick Installation Guide for Yealink IP Phones Picking up the handset from the handset cradle, the hookswitch bounces and the phone connects to the ⑱ Hookswitch line, laying the handset down on the handset cradle, the phone disconnects from the line.
Page 14 User Guide for the SIP-T27P IP Phone Icons Description Ringer volume is 0 Phone Lock Received Calls Placed Calls Missed Calls Call Forward/Forwarded Calls Recording box is full A call cannot be recorded Recording starts successfully Recording cannot be started...
Page 15 Overview LED Status Description The phone is powered off. The phone is idle. The phone is busy. The call is placed on hold or is held. The call is muted. Line key LED LED Status Description The line is seized. Solid green The line is in conversation.
Page 16 User Guide for the SIP-T27P IP Phone Line key LED (associated with a shared line) The local SCA phone indicates the phone is involved in an SCA call, while the monitoring SCA phone indicates the phone is not involved in the SCA call.

Page 17: User Interfaces

Page 18 User Guide for the SIP-T27P IP Phone Options Phone User Interface Web User Interface --Backlight √ --Contrast √ --Language √ --Time & Date √ --Administrator Password √ --Key as Send √ --Phone Lock √ --Ring Tones √ --Contact Management --Directory --Local Directory √...
Page 19 Overview Options Phone User Interface Web User Interface --Intercom √ --Multicast Paging --Music on Hold --Automatic Call Distribution (ACD) --Shared Call Appearance (SCA) --Bridged Line Appearance (BLA) --Messages √ SIP Account --User Options --Active Line √ --Label √ --Display Name √...

Page 20: Documentations

Page 21: getting started.

Page 22 User Guide for the SIP-T27P IP Phone Phone Stand  Handset & Handset Cord  Ethernet Cable  Quick Start Guide  Check the list before installation. If you find anything missing, contact your system administrator.

Page 23: Optional Accessories

Page 24 User Guide for the SIP-T27P IP Phone If your phone is already installed, proceed to Phone Initialization on page 16. This section introduces how to install the phone: Attach the stand or the optional wall mount bracket Connect the handset and optional headset...
Page 25 Connect the included or a standard Ethernet cable between the Internet port on the phone and the one on the wall or switch/hub device port. Note The IP phone should be used with Yealink original power adapter (5V/1.2A) only. The use of the third-party power adapter may cause the damage to the phone.

Page 26: Phone Initialization

Page 27: phone status.

Page 28 User Guide for the SIP-T27P IP Phone The phone status is displayed on the first page of the web user interface. If your phone cannot contact a DHCP server for any reason, you need to configure network settings manually. The IP phone can support either or both IPv4 and IPv6 addresses.
Page 29 Getting Started You can configure a static IPv4 address for the IP phone. Before configuring it, make sure that the IP mode is configured as IPv4 or IPv4 & IPv6. To configure a static IPv4 address via phone user interface: Press Menu->Settings->Advanced Settings (default password: admin) ->Network->WAN Port.
Page 30 User Guide for the SIP-T27P IP Phone Press to select IPv6 and then press the Enter soft key. Press to select Static IPv6 Client and then press the Enter soft key. Enter the desired value in the IPv6 IP, IPv6 IP Prefix, IPv6 Default Gateway, IPv6 Pri.DNS and IPv6 Sec.DNS field respectively.

Page 31: Idle Screen

Page 32 User Guide for the SIP-T27P IP Phone Description This area shows the soft key labels. The default soft key labels are “History”, “Directory”, “DND” and “Menu”. You can enter data and edit fields using the phone keypad. Keypad on the phone provides different characters (or numbers) when using the 2aB, abc, Abc, ABC or 123 input mode.
Page 33 Getting Started Input Mode Keypad space space space *.,'?!\-()@/: *.,'?!\-()@/: *.,'?!\-()@/: *.,'?!\-()@/: _;+&%=< _;+&%=< _;+&%=< _;+&%=< > > > > .*:/@[] ￡$¥¤[]{} ￡$¥¤[]{} ￡$¥¤[]{} ￡$¥¤[]{} ~^¡ ¿§#"| ~^¡ ¿§#"| ~^¡ ¿§#"| ~^¡ ¿§#"| To enter or edit data: Do one of the following: If you want to Then you can Press a keypad key one or more times...
Page 34 User Guide for the SIP-T27P IP Phone If you want to Then you can Key: If it is in the uppercase (ABC soft key), uppercase and lowercase (Abc soft key) or lowercase (abc soft key) input mode, it will provide the space character.

Page 35: Customizing Your Phone

Page 36: contrast, page 37: time & date.

Page 38 User Guide for the SIP-T27P IP Phone configure the time and date manually. If the phone cannot obtain the time and date from the Simple Network Time Protocol (SNTP) server, contact your system administrator for more information. To configure the SNTP settings via phone user interface: Press Menu->Settings->Basic Settings->Time &...
Page 39 Customizing Your Phone Enter the specific date and time. Press the Save soft key to accept the change. The time and date displayed on the LCD screen will change accordingly. To configure the date and time format via phone user interface: Press Menu->Settings->Basic Settings->Time &...

Page 40: Administrator Password

Page 41: phone lock.

Page 42 User Guide for the SIP-T27P IP Phone field. Press , or the Switch soft key to select the desired type from the Lock Type field. (Optional.) Enter the desired interval of automatic phone lock in the Lock Time Out field.
Page 43 Customizing Your Phone Enter the desired value in the Current PIN, New PIN and Confirm PIN field respectively. Press the Save soft key to accept the setting or the Back soft key to cancel. Note The unlock PIN length must be within 15 digits. To unlock the phone via phone user interface: Press any locked key, enter the “Unlock PIN”...

Page 44: Volume

Page 45: ring tones.

Page 46 User Guide for the SIP-T27P IP Phone Press to select the desired account and then press the Enter soft key. Press to select the desired ring tone. If Common is selected, this account will use the ring tone selected for the phone.

Page 47: Directory

Page 48 User Guide for the SIP-T27P IP Phone The LCD screen will display the list(s) in the adjusted order. Click Confirm to accept the change. Note Directory is configurable via web user interface only. the directory via phone user interface: view Press the Directory soft key when the phone is idle.

Page 49: Local Directory

Page 50 User Guide for the SIP-T27P IP Phone You can also edit or delete any newly added contact groups. To edit a group in the local directory: Press the Directory soft key. The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default.

Page 51: Adding Contacts Manually

Page 52 User Guide for the SIP-T27P IP Phone The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory refer to Directory on page press Menu->Directory->Local Directory to enter the local directory.
Page 53 Customizing Your Phone Adding Contacts from Call History To add a contact to the local directory from call history: Press the History soft key. Press to highlight the desired entry. Press the Option soft key, and then select Add to Contacts from the prompt list. Press the OK soft.
Page 54 User Guide for the SIP-T27P IP Phone The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory refer to Directory on page press Menu->Directory->Local Directory to enter the local directory.
Page 55 Customizing Your Phone The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory refer to Directory on page press Menu->Directory->Local Directory to enter the local directory. Select the desired contact group and then press the Enter soft key.
Page 56 User Guide for the SIP-T27P IP Phone The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory refer to Directory on page press Menu->Directory->Local Directory to enter the local directory.
Page 57 Customizing Your Phone Press the Search soft key. Enter a few continuous characters of the contact name or continuous numbers of the contact number (office, mobile or other number) using the keypad. The contacts whose name or phone number matches the characters entered will appear on the LCD screen.
Page 58 User Guide for the SIP-T27P IP Phone The LCD screen will display search results in the adjusted order. Click Confirm to accept the change. Note Search source list in dialing is configurable via web user interface only. To search for an entry in the enabled search source lists: Pick up the handset, press the Speakerphone key or press the line key.
Page 59 Customizing Your Phone To import an XML contact list file via web user interface: Click on Directory->Local Directory. Click Browse to locate a contact list file (the file format must be *.xml) from your local system. Click Import XML to import the contact list. The web user interface prompts "The original contact will be covered, continue?".

Page 60: Blacklist

Page 61 Customizing Your Phone Enter the name and the office, mobile or other numbers in the corresponding fields. Press , or the Switch soft key to select the desired account from the Account field. If Auto is selected, the phone will use the default account when placing calls to the contact from the blacklist directory.

Page 62: Remote Phone Book

Page 63 Customizing Your Phone To access your remote phone book via phone user interface: Press Menu->Directory->Remote Phone Book. If Remote Phone Book is added to the directory (refer to Directory on page 37), press Directory->Remote Phone Book to enter the remote phone book. Select the desired remote group, and then press the Enter soft key.
Page 64 The default value is 21600. Click Confirm to accept the change. The SIP-T27P IP phone maintains call history lists of Missed calls, Placed calls, Received calls and Forwarded calls. Each call history list supports up to 100 entries. You can view...
Page 65 Customizing Your Phone History record feature is enabled by default. If you don’t want to save the call history, you can disable the feature. To disable history record via phone user interface: Press Menu->Features->History Setting. Press , or the Switch soft key to select Disabled from the History Record field.
Page 66 User Guide for the SIP-T27P IP Phone Press the Save soft key. For more information, refer to Contact Management on page 37. To delete an entry from the call history list: Press the History soft key. Press to switch among All Calls, Missed Calls, Placed Calls, Received Calls and Forwarded Calls.

Page 67: Headset Use

Page 68 User Guide for the SIP-T27P IP Phone To deactivate the headset mode: Press again on the phone. The HEADSET key LED goes out when the headset mode is deactivated. You can use headset in priority when headset prior feature is enabled. This feature is especially useful for permanent or full-time headset users.

Page 69: Dss Keys

Page 70 User Guide for the SIP-T27P IP Phone monitored status when the line keys are assigned with particular features, such as BLF . The default key type of line key 1-6 is Line. The default key type of line key 7-21 is N/A, which indicates that this line key provides no functionality until configuration.
Page 71 Customizing Your Phone When you assign functionality to line key located in line key 9-21, the label of the line key 8-14 are indicated on the second page, and the labels of the line key 15-21 are indicated on the third page. The line key in the right bottom is used to switch pages. The following figure shows an example: The following table lists the page icons: Icons...
Page 72 User Guide for the SIP-T27P IP Phone Select Enabled from the pull-down list of Enable Page Tips. Click Confirm to accept the change. Note Page tips feature is configurable via web user interface only. Line key features are explained in the following subchapters in detail: Line ...
Page 73 Customizing Your Phone Phone Lock  Directory  For the features not listed above, refer to Basic Call Features on page Advanced Phone Features on page 119. For more information, contact your system administrator. Line You can use this key feature to accept incoming calls, place active calls on hold or resume a held call.
Page 74 User Guide for the SIP-T27P IP Phone Usage: Press the DSS key to dial out the voice mail access code. Then follow the voice prompt to listen to the voice mails. Direct Pickup You can use this key feature to answer someone else’s incoming call on the phone.
Page 75 Customizing Your Phone Type (Key Event) Dependencies: Key Type (Prefix) Label (key label displayed on the LCD screen) Value (the prefix number) Usage: Press the DSS key when the phone is idle, the phone will then enter the pre-dialing screen and display the prefix number that you specified in the Value field. You can enter the remaining digits and then dial out.
Page 76 User Guide for the SIP-T27P IP Phone Type (Key Event) Dependencies: Key Type (LDAP) Label (key label displayed on the LCD screen) Usage: Press the DSS key to access the LDAP search screen. Enter a few continuous characters of the contact name or continuous numbers of the contact number using the keypad.
Page 77 Customizing Your Phone differently depending on the transfer mode assigned to the DSS key. Type (Key Event) Dependencies: Key Type (Tran) Label (key label displayed on the LCD screen) Value (the number you want to transfer to) Usage: When the transfer mode on DSS key is Blind Transfer, press the DSS key to complete ...
Page 78 User Guide for the SIP-T27P IP Phone When DND is in custom mode: Press the DSS key to access the Custom DND screen. You can activate or deactivate DND for one or all accounts. Note When DND is activated, the DND key LED will illuminate solid green, and the incoming calls will be rejected automatically.
Page 79 Customizing Your Phone Configure the auto provision parameters in the corresponding fields. Press the OK soft key. The phone will reboot to update configurations. You can use this key feature to trigger the phone to send an HTTP GET request containing a specific URL.
Page 80 Usage: Press the Switch Account Down key to scroll down the account list to select the desired default account. Note Programable keys are configurable via web user interface only. If EXP20 is connected to the SIP-T27P IP phone, you can customize features for Ext keys.
Page 81 Note Ext keys are configurable via web user interface only. You can register one or multiple accounts on the SIP-T27P IP phone. You can also configure each line key to associate with an account or configure multiple line keys to associate with an account.
Page 82 User Guide for the SIP-T27P IP Phone 2) Enter the desired value in the Outbound Proxy1/2 and Proxy Fallback Interval field respectively. Contact your system administrator for more information. Press the Save soft key to accept the change or the Back soft key to cancel.

Page 83: Dial Plan

Page 84 User Guide for the SIP-T27P IP Phone Basic expression syntaxes you need to know: The dot "." can be used as a placeholder or multiple placeholders for any character. Example: "12." would match "123", "1234", "12345", "12abc", etc. An "x" can be used as a placeholder for any character. Example: "12x"...
Page 85 Customizing Your Phone Enter the desired line ID in the Account field or leave it blank. Click Add to add the replace rule. When you enter the number “1” using the keypad and then press the Send soft key, the phone will dial out “1234” instead. Note The valid values for the Account field can be one or more digits among 1-6.
Page 86 User Guide for the SIP-T27P IP Phone You can configure one or more dial-now rules (up to 100) on your phone. When the dialed number matches the dial-now string, the number will be dialed out automatically. For example, a dial-now rule is configured as "2xx", any entered three-digit string beginning with 2 will then be dialed out automatically on the phone.
Page 87 Customizing Your Phone To configure the delay time for dial-now rule via web user interface: Click on Features->General Information. Enter the time between 0 and 14 (seconds) in the Time-Out for Dial-Now Rule field. The default value is “1”. Click Confirm to accept the change. Note Delay time for dial-now rule is configurable via web user interface only.
Page 88 User Guide for the SIP-T27P IP Phone For more information on the valid values for the Account field, refer to Replace Rule on page 74. Click Confirm to accept the change. Note The default value of minimum and maximum length is 1 and 15 respectively.

Page 89: Emergency Number

Page 90: live dialpad, page 91: hotline.

Page 92 User Guide for the SIP-T27P IP Phone...

Page 93: Basic Call Features

Page 94 User Guide for the SIP-T27P IP Phone You can place a call in one of three ways using your SIP-T27P IP phone: Using the handset  Using the speakerphone  Using the headset  You can also dial the number first, and then choose the way you want to speak to the other party.
Page 95 To place multiple calls: You can have more than one call on your SIP-T27P IP phone. To place a new call during an active call, do one of the following: Press the line key. The active call is placed on hold.
Page 96 User Guide for the SIP-T27P IP Phone You can press to switch between calls, and then press the Resume soft key to retrieve the desired call. Note If multiple accounts are registered on the phone, you can first press the desired line key on the idle screen or press the Line soft key on the dialing screen, and then you can use the selected account to place a call.
Page 97 Basic Call Features indicator. Answering When in Another Call If you have an active call, and an incoming call arrives on the phone, do one of the following: Press the Answer soft key. The incoming call is answered and the original call is placed on hold. Press to access the new call.

Page 98: Recent Call In Dialing

Page 99: auto answer, page 100: auto redial, page 101: call completion.

Page 102 User Guide for the SIP-T27P IP Phone Press , or the Switch soft key to select Enabled from the Call Completion field. Press the Save soft key to accept the change or the Back soft key to cancel. Call completion is configurable via web user interface at the path Features->General Information.

Page 103: Recall

Page 104 User Guide for the SIP-T27P IP Phone To un-mute a call: Press again to un-mute the call. You can place an active call on hold. Only one active call can be in progress at any time. Other calls can be made and received while placing the original call on hold. When you place a call on hold, your IP PBX may play music to the other party while waiting.
Page 105 Basic Call Features You can use DND to reject incoming calls automatically on the phone. The prompt message "n New Missed Call(s)" ("n" indicates the number of missed calls) will appear on the LCD screen, and callers will receive a busy message. All calls you receive while DND is enabled are logged to your missed calls list.
Page 106 User Guide for the SIP-T27P IP Phone To activate DND in phone mode: Press the DND soft key when the phone is idle. icon on the status bar indicates that DND is enabled. Incoming calls will be rejected automatically and "n New Missed Call(s)" ("n"...

Page 107: Call Forward

Page 108 User Guide for the SIP-T27P IP Phone To configure the DND authorized numbers via web user interface: Click on Features->Forward & DND. Select Enabled from the pull-down list of DND Emergency. Enter the numbers in the DND Authorized Numbers field.
Page 109 Basic Call Features No Answer Forward: Incoming calls are forwarded if not answered after a period  of time. You can enable/disable call forward for the phone system, or you can customize call forward for each or all accounts. Two call forward modes: Phone (default): Call forward is effective for the phone system.
Page 110 User Guide for the SIP-T27P IP Phone (Optional.) Enter the always forward on code or off code respectively in the On Code or Off Code field. b) If you select Busy Forward: Press , or the Switch soft key to select Enabled from the Busy Forward field.
Page 111 Basic Call Features (Optional.) Enter the no answer forward on code or off code respectively in the On Code or Off Code field. Press the Save soft key to accept the change or the Back soft key to cancel. icon on the status bar indicates that the call forward is enabled. To enable call forward in custom mode: Press Menu->Features->Call Forward.
Page 112 User Guide for the SIP-T27P IP Phone (Optional.) Enter the always forward on code or off code respectively in the On Code or Off Code field. You can also enable always forward for all accounts. After always forward was enabled for a specific account, do the following: Press to highlight the Always Forward field.
Page 113 Basic Call Features You can also enable busy forward for all accounts. After busy forward was enabled for a specific account, do the following: Press to highlight the Busy Forward field. Press the All Lines soft key. The LCD screen prompts “Copy to all lines?”. Press the OK soft key to accept the change or the Cancel soft key to cancel.
Page 114 User Guide for the SIP-T27P IP Phone The LCD screen prompts “Copy to all lines?”. Press the OK soft key to accept the change or the Cancel soft key to cancel. Press the Save soft key to accept the change or the Back soft key to cancel.
Page 115 Basic Call Features For multiple numbers, enter a comma between every two numbers. Click Confirm to accept the change. When call forward is enabled on the phone, the phone cannot forward incoming calls from the numbers specified in the Forward Authorized Numbers field. Note Forward authorized number is configurable via web user interface only.
Page 116 User Guide for the SIP-T27P IP Phone Dynamic Forwarding To forward an incoming call to another party: When the phone is ringing, press the FWD soft key. Enter the number you want to forward the incoming call to. Press , or the Send soft key.
Page 117 Basic Call Features To perform a semi-attended transfer: Press or the Tran soft key during a call. Do one of the following: Enter the number you want to transfer the call to. Press the Directory soft key, and then select Local Directory. Select the desired group and search for the contact (Directory should be configured in advance.

Page 118: Call Waiting

Page 119 Basic Call Features This is the default method of conference called Local Conference. To set up a local conference call: Place a call to the first party. When the first party answers the call, press or the Conference soft key to place a new call.

Page 120: Network Conference

Page 121: call park, page 122: call pickup, page 123: directed call pickup, page 124: group call pickup.

Page 125 Basic Call Features To configure the group call pickup code on a per-line basis via web user interface: Click on Account->Advanced. Select the desired account from the pull-down list of Account. Enter the group call pickup code in the Group Call Pickup Code field. Click Confirm to accept the change.

Page 126: Anonymous Call

Page 127: anonymous call rejection.

Page 128 User Guide for the SIP-T27P IP Phone (Optional.) Enter the anonymous call rejection off code in the Reject Off Code field. Press the Save soft key to accept the change or the Back soft key to cancel. Anonymous call rejection is configurable via web user interface at the path...

Page 129: Advanced Phone Features

Page 130 User Guide for the SIP-T27P IP Phone Enter the phone number or extension you want to monitor in the Value field. (Optional.) Enter the directed call pickup code in the Extension field. Press the Save soft key to accept the change or the Back soft key to cancel.

Page 131: Blf List

Page 132 User Guide for the SIP-T27P IP Phone When there is a conversation on the monitored user, press the BLF list key to barge  in and set up a conference call. Before barging in an active call, ensure that the BLF List Barge In Code has been configured in advance.

Page 133: Call Recording

Page 134 User Guide for the SIP-T27P IP Phone (Optional.) Enter the string that will appear on the LCD screen in the Label field. Press the Save soft key to accept the change or the Back soft key to cancel. To configure a URL record key via phone user interface: Press Menu->Features->DSS Keys.

Page 135: Hot Desking

Page 136 User Guide for the SIP-T27P IP Phone Select the desired DSS key. Press , or the Switch soft key to select Key Event from the Type field. Press , or the Switch soft key to select Hot Desking from the Key Type field.

Page 137: Intercom

Page 138 User Guide for the SIP-T27P IP Phone Intercom features you need to know: Intercom Feature Description Enable or disable the IP phone to automatically Accept Intercom answer an incoming intercom call. Enable or disable the IP phone’s microphone for Intercom Mute intercom calls.

Page 139: Multicast Paging

Page 140 User Guide for the SIP-T27P IP Phone Press , or the Switch soft key to select Multicast Paging from the Key Type field. (Optional.) Enter the string that will appear on the LCD screen in the Label field. Enter the multicast IP address and port number (e.g., 224.5.6.20:10008) in the Value field.
Page 141 Advanced Phone Features The default tag is Empty if it is not configured before. Press the Option soft key, and then press the Edit soft key. Enter the multicast IP address and port number (e.g., 224.5.6.20:10008) in the Address field. The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
Page 142 User Guide for the SIP-T27P IP Phone Press the OK soft key to accept the change or the Cancel soft key to cancel. If you want to delete all paging groups, you can press the Del All soft key. You can also configure the phone to use a default codec for sending multicast RTP stream via web user interface.
Page 143 Advanced Phone Features Paging Barge The paging barge parameter defines the priority of the voice call in progress. If the priority of an incoming multicast paging call is lower than that of the active call, it will be ignored automatically. If Disabled is selected from the pull-down list of Paging Barge, the voice call in progress will take precedence over all incoming multicast paging calls.
Page 144 User Guide for the SIP-T27P IP Phone Click Confirm to accept the change. Note The priorities of listening addresses are predefined: 1 with the highest priority, 10 with the lowest. Multicast listening addresses are configurable via web user interface only.

Page 145: Music On Hold

Page 146 ACD on the SIP-T27P IP phone allows the ACD system to distribute large volumes of incoming calls to the registered ACD users. To use this feature, you should configure an ACD key in advance.
Page 147 Advanced Phone Features To configure an ACD key via phone user interface: Press Menu->Features->DSS Keys. Select the desired DSS key. Press , or the Switch soft key to select ACD from the Type field. (Optional.) Enter the string that will appear on the LCD screen in the Label field. Press the Save soft key to accept the change or the Back soft key to cancel.
Page 148 User Guide for the SIP-T27P IP Phone When you set the ACD user status to be available, the ACD key LED illuminates solid green, and then the server begins distributing calls to your phone. When you set the ACD user status to be unavailable, the ACD key LED flashes green, and then the server temporarily stops distributing calls to your phone.
Page 149 Advanced Phone Features You can configure a primary account on the IP phone and other alternate accounts on the other IP phones. In a SCA Hybrid Key System scenario, you can automatically assign multiple DSS keys with Line type for a registered shared line on the phone (If auto linekeys feature is enabled).
Page 150 User Guide for the SIP-T27P IP Phone Auto LineKeys is you can automatically assign multiple DSS keys with enabled, Line type for a registered shared line on the phone. Click Confirm to accept the change.
Page 151 Advanced Phone Features To configure the shared line settings and the number of line key on phone A via web user interface: Register the primary account 4603. Click on Advanced, and then select Shared Call Appearance from the pull-down list of Shared Line. Enter the desired number in the Number of line key field.
Page 152 User Guide for the SIP-T27P IP Phone The default value is 1. In this example, the value is set to 2. Click Confirm to accept the change. The phone A will automatically configure the line keys from the first unused DSS key, according to the configured number in the Number of line key field.
Page 153 Advanced Phone Features (Enter the primary account 4603 in the Register Name field.) Click on Advanced, and then select Shared Call Appearance from the pull-down list of Shared Line. Enter the desired number in the Number of line key field. This field appears only if Auto Linekeys is enabled.
Page 154 User Guide for the SIP-T27P IP Phone Click Confirm to accept the change. The phone B will automatically configure the line keys from the first unused DSS key, according to the configured number in the Number of line key field.
Page 155 Advanced Phone Features Press , or the Switch soft key to select Private Hold from the Key Type field. (Optional.) Enter the string that will appear on the LCD screen in the Label field. Press the Save soft key to accept the change or the Back soft key to cancel. Configuring call pull feature Call pull feature allows users to retrieve an existing call from another shared phone that is in active or public hold status.
Page 156 User Guide for the SIP-T27P IP Phone This section provides you with detailed information on using the SIP-T27P IP phone in a SCA Hybrid Key System scenario. In a SCA Hybrid Key System scenario, the status of the line key LED which associates with a shared line will change. For more information on...
Page 157 You can answer the incoming call on either phone A or phone B. The LCD screen of phone A displays the information of the incoming call (e.g., “Incoming call: 4604 Yealink”). Note Make sure call waiting feature is enabled on phone A. For more information, refer to Call Waiting on page 108.
Page 158 User Guide for the SIP-T27P IP Phone Press the Answer soft key. Phone B stops ringing. Press to access the new call. Press or the Answer soft key. Phone B stops ringing. The incoming call is answered and the original call is placed on hold. The LED indicators of the line key 1 on phone A will slow flash green and phone B will slow flash red indicating that there is the held call on the line key 1.
Page 159 Advanced Phone Features To place a call on private hold: Press the PriHold soft key or private hold key on phone A when there is an active call on the shared line (You may need to press the More soft key to see the PriHold soft key).
Page 160 User Guide for the SIP-T27P IP Phone Long press the desired line key. The Cancel, CallPull, NewCall and Retrieve soft keys appear on the LCD screen. Press the Retrieve soft key to retrieve the call. The conversation is established between phone B and phone C, phone A disconnects the call.
Page 161 Advanced Phone Features If phone A has more than one call, do the following: Long press the desired line key on phone B. The list of calls appears on the LCD screen of phone B. Press to select the active call. The Cancel, CallPull, NewCall and Barge In soft keys appear when the active call is highlighted.
Page 162 User Guide for the SIP-T27P IP Phone To retrieve a call from another shared phone: If there is an active call between phone A and phone C, do the following: Long press the desired line key on phone B. The Cancel, CallPull, NewCall and Barge In soft keys appear on the LCD screen of phone B.
Page 163 Advanced Phone Features BLA allows users to share a SIP line on two or more IP phones. Users can monitor the specific extension (BLA number) for status changes on each IP phone. To use this feature, a BLA group should be pre-configured on the server and one of them is specified as a BLA number.
Page 164 User Guide for the SIP-T27P IP Phone To register an account and configure BLA feature on phone A via web user interface: Register the account 14019833020. Click on Advanced, and then select Draft BLA from the pull-down list of Shared Line.
Page 165 Advanced Phone Features Click Confirm to accept the change. To register an account and configure BLA feature on phone B via web user interface: Register the account 10462190020. Click on Advanced, and then select Draft BLA from the pull-down list of Shared Line.
Page 166 Enter the desired number in the BLA Number field. Click Confirm to accept the change. This section provides you with detailed information on using the SIP-T27P IP phone in a BLA scenario. In a BLA scenario, the status of the line key LED which associates with a bridged line will change.
Page 167 Advanced Phone Features The phone will dial the entered number. Press the line key when the phone is idle to enter the pre-dialing screen. Enter the desired number using the keypad and then press , or the Send soft key. The phone will dial the entered number.
Page 168 User Guide for the SIP-T27P IP Phone To place a call on hold: Press or the Hold soft key on phone A when party A and party C are talking. The line key LEDs on phone A slow flash green and phone B slow flash red when the bridged line call is placed on hold.

Page 169: Messages

Page 170 User Guide for the SIP-T27P IP Phone Select the desired message and then press the View soft key. Note If the phone prompts receiving new text messages, you can also press the View soft key to read the new messages directly.
Page 171 Advanced Phone Features Check the From and To fields, and then press the Send soft key. To delete a text message: Press Menu->Message->Text Message->Inbox (Sentbox, Outbox or Draftbox). Select the desired message and then press the Delete soft key. Select Delete to delete the desired message, then press OK. The LCD screen prompts "Delete message?".

Page 172: Voice Mail

Page 173: message waiting indicator (mwi).

Page 174 User Guide for the SIP-T27P IP Phone The MWI subscription parameters you need to know: Options Description Subscribe for MWI Enable or disable a subscription for MWI service. Period of MWI subscription. The IP phone sends a MWI Subscription Period refresh SUBSCRIBE request before initial SUBSCRIBE expiration.
Page 175 Advanced Phone Features The IP phone will subscribe to the account number for MWI service by default. To enable subscribe MWI to voice mail via web user interface: Click on Account->Advanced. Select the desired account from the pull-down list of Account. Select Enabled from the pull-down list of Subscribe for MWI.
Page 176 User Guide for the SIP-T27P IP Phone...

Page 177: Troubleshooting

Page 178 User Guide for the SIP-T27P IP Phone If the phone is powered from PoE, ensure that you use a PoE-compliant switch or  hub. Why does the phone display "Network unavailable"? Ensure that the Ethernet cable is plugged into the Internet port on the phone and ...

Page 179: Troubleshooting On

Page 180 User Guide for the SIP-T27P IP Phone check whether the dial tone is present for one of the audio modes. If the dial tone exists on another audio mode, connect a different handset or headset to isolate the problem. Why doesn’t the phone ring? Check the ringer volume on the phone.
Page 181 Troubleshooting To enable SRTP on a per-line basis via web user interface: Click on Account->Advanced. Select the desired account from the pull-down list of Account. Select the desired value (Optional or Compulsory) from the pull-down list of RTP Encryption(SRTP). Click Confirm to accept the change. Note SRTP is not available on all servers.
Page 182 User Guide for the SIP-T27P IP Phone Click Export to open file download window, and then save the file to your local system. How to export system log? We may need you to provide a system log to help analyze your problem.
Page 183 Troubleshooting Click Export to open the file download window, and then save the file to your local system. You can also export the system log to a syslog server. Contact your system administrator for more information. Note It is recommended to reset the syslog level to 3 after exporting the system syslog. How to export all diagnostic files? We may need you to provide three types of diagnostic files (including PCAP trace, system log and BIN configuration file) to help analyze your problem.
Page 184 User Guide for the SIP-T27P IP Phone Click Export to open file download window, and then save diagnostic files to your local system. Note If the issue cannot be reproduced, just directly click Export to export all diagnostic files. How to reboot the phone? To reboot the phone via web user interface: Click on Settings->Upgrade.
Page 185 Troubleshooting How to upgrade firmware? To upgrade firmware via web user interface: Click on Settings->Upgrade. Click Browse to locate the required firmware from your local system. Click Upgrade to upgrade the firmware. The browser pops up the dialog box “Firmware of the SIP Phone will be updated. It will take 5 minutes to complete.
Page 186 User Guide for the SIP-T27P IP Phone The LCD screen prompts “Welcom Initializing…please wait”. The phone will be reset to factory settings sucessfully after startup. Note Reset of your phone may take a few minutes. Do not power off until the phone has started...

Page 187: Regulatory Notices

Page 188 User Guide for the SIP-T27P IP Phone Place the device on a stable and level platform.  Please do not place heavy objects on the device in case of damageand  deformation caused by the heavy load. Keep at least 10 cm between the device and the closest object for heat ...
Page 189 Appendix A-Time Zones Time Zone Time Zone Name Samoa United States-Hawaii-Aleutian, United States-Alaska-Aleutian -9:30 French Polynesia United States-Alaska Time Canada(Vancouver,Whitehorse), Mexico(Tijuana,Mexicali), United States-Pacific Time Canada(Edmonton,Calgary), Mexico(Mazatlan,Chihuahua), United States-MST no DST, United States-Mountain Time Canada-Manitoba(Winnipeg), Chile(Easter Islands), Mexico(Mexico City,Acapulco), United States-Central Time Bahamas(Nassau), Canada(Montreal,Ottawa,Quebec), Cuba(Havana), United States-Eastern Time -4:30...
Page 190 User Guide for the SIP-T27P IP Phone Time Zone Time Zone Name +9:30 Australia(Adelaide), Australia(Darwin) Australia(Brisbane), Australia(Hobart), Australia(Sydney,Melboume,Canberra), Russia(Vladivostok) +10:30 Australia(Lord Howe Islands) New Caledonia(Noumea), Russia(Srednekolymsk Time) +11:30 Norfolk Island New Zealand(Wellington,Auckland), Russia(Kamchatka Time) +12:45 New Zealand(Chatham Islands) Tonga(Nukualofa) +13:30...

Page 191: Configuring Bla Feature On The Ip Phone

Page 192: using bla feature on the ip phone, rename the bookmark, delete bookmark, delete from my manuals, upload manual.

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Guest Essay

Say Hello to Your Addiction Risk Score — Courtesy of the Tech Industry

An illustration of a computer screen with a doctor’s hand attempting to move a digital pill into a prescription bottle and getting an error message.

By Maia Szalavitz

Ms. Szalavitz is a contributing Opinion writer who covers addiction and public policy.

Before Dr. Bobby Mukkamala — an ear, nose, and throat specialist in Michigan — prescribed postsurgical opioids recently, he checked state records of his patient’s existing controlled substance prescriptions, as legally required. A score generated by a proprietary algorithm appeared on his screen. Known as NarxCare (now used by most state prescription monitoring databases, major hospitals and pharmacy chains), the algorithm indicated his patient had an elevated risk of developing an addiction to opioid painkillers.

“I create a lot of pain when I operate,” said Dr. Mukkamala, who leads the American Medical Association’s Substance Use and Pain Task Force. “The nose and the face are very painful places to have procedures done.” Consequently, it is difficult to avoid prescribing opioids to manage pain.

Algorithms like NarxCare and a newly approved genetic test for opioid use disorder risk known as AvertD use machine learning techniques to try to help doctors reduce the odds that patients will become addicted to these medications.

Via NarxCare, most Americans now have an opaque equivalent of a controlled substance credit score, which they often don’t even know exists unless a doctor or pharmacist tells them that it’s a problem. (NarxCare’s manufacturer claims that its scores and reports “are intended to aid, not replace, medical decision making.”) And if it ever becomes widely used, AvertD, promoted as a way to use personalized genetics to assess risk, could put yet more difficult-to-challenge red flags on people’s records.

These tools may be well intentioned. But addiction prediction and prevention is a mind-bogglingly difficult task. Only a minority of people who take opioids become addicted, and risk factors vary for biological, psychological, sociological and economic reasons.

Even accurate scores can do harm, since addiction is stigmatized and often criminalized. Some people have been expelled from physicians’ practices for having high NarxCare scores, with no way of appealing the decision. Others were denied postsurgical opioids by nurses or turned away from multiple pharmacies, with little recourse.

These kinds of algorithms could potentially worsen race and class biases in medical decision making. It’s not hard to imagine a dystopian future of unaccountable algorithms that render some people forever ineligible for pain care with controlled substances.

Dr. Mukkamala noted that closer scrutiny of his recent patient’s medical history showed there really wasn’t reason for concern. “What’s inappropriate is for me to look at any number other than zero and say: ‘Boy, this person’s got a problem. I can’t prescribe them anything for their pain,’” he said. Many medical professionals, however, don’t have his level of knowledge and confidence. Prejudice against people with addiction is common, as is fear of being charged with overprescribing — and the algorithms’ scores only feed into those concerns. Different, also unaccountable, algorithms monitor physicians’ prescribing patterns and compare them with their colleagues’, so this is not an overblown concern.

When I reported on NarxCare in 2021 for Wired , I heard from patients who were left in agony. One said that she had her opioids stopped in the hospital and was then dismissed from care by her gynecologist during treatment for painful endometriosis, because of a high score. She didn’t have a drug problem; her score seems to have been elevated because prescriptions for her two medically needy rescue dogs were recorded under her name, making it appear she was doctor shopping. Another high-scoring patient had his addiction treatment medication prescription repeatedly rejected by pharmacies, even though such medications are the only treatment proven to reduce overdose risk.

More recent research and reporting confirm that scientists’ concerns about the widespread use of the software remain and that patients are still reporting encountering problems because of potentially incorrect risk assessments and medical staff members’ fears about disregarding NarxCare scores.

To generate risk scores, NarxCare apparently uses variables like the number of doctors someone sees, the pharmacies they visit and the prescriptions they get and compares an individual’s data with information on patterns of behavior associated with doctor shopping and other indicators of possible addiction.

But there is no transparency: The NarxCare algorithm is proprietary, and its information sources, training data and risk variables — and how they are weighted — aren’t public.

Another problem for NarxCare is that opioid addiction is actually quite uncommon — affecting 2 to 4 percent of the adult and adolescent population, despite the fact that a 2016 study shows some 70 percent of adults have been exposed to medical opioids. “Identifying somebody’s base line risk of opioid use disorder is inherently going to be pretty difficult,” said Angela Kilby, an economist who studied algorithms like NarxCare when she was an assistant professor at Northeastern University. “It’s sort of like trying to find a needle in a haystack.” The rarity of the condition possibly lowers the algorithm’s precision, meaning that most positive tests may be falsely positive simply because the base line rate of the disorder is low.

Research shows that about 20 percent of the time, people who are flagged as doctor shoppers by identifying risk factors similar to those apparently included in NarxCare in fact have cancer: They typically see multiple specialists, often at academic medicine centers where there may be teams of doctors writing prescriptions. The algorithm can’t necessarily distinguish between coordinated care and doctor shopping.

Likewise, people who are visiting multiple doctors or pharmacies and traveling long distances might be drug seeking, or they could be chronically ill and unable to find care locally. Some states also put information from criminal records into prescription monitoring databases, and this can lead to bias against Black and Hispanic people simply because racial discrimination means that they are more likely to have been arrested.

There’s also a more fundamental problem. As Dr. Kilby notes, the algorithm is designed to predict elevations in someone’s lifetime risk of opioid addiction, not whether a new prescription will change that trajectory. For example, if someone is already addicted, a new prescription doesn’t change that, and denying one can increase overdose death risk if the person turns to street drugs.

Recently, NarxCare has been joined in the addiction prediction game by AvertD, a genetic test for risk of opioid use disorder for patients who may be prescribed such medications, which the Food and Drug Administration approved last December. Research by the manufacturer, Solvd Health, shows that a patient who will develop opioid addiction is 18 times as likely to receive a positive result as a patient who will not develop it. The test, which looks for specific genes associated with motivational pathways in the brain that are affected by addiction, utilizes an algorithm trained on data from over 7,000 people, including some with opioid use disorder.

But that F.D.A. approval came, surprisingly, after the agency’s advisory committee for the test voted overwhelmingly against it. While the F.D.A. worked with the company behind the test to modify it based on the committee’s feedback, it has continued to raise concerns. And recently a group of 31 experts and scientists wrote to the F.D.A. urging it to reverse course and rescind its approval. Some of the group’s concerns echo the problems with NarxCare and its algorithm.

For a study published in 2021, Dr. Alexander S. Hatoum, a research assistant professor of psychological and brain sciences at Washington University in St. Louis, and his colleagues independently evaluated the algorithm elements used for a tool like AvertD, based on information published by the company. They found that all the iterations they tested were confounded by population stratification — a problem that affects genetic tests because they reflect the history of human ancestry and how it changed over time because of migration patterns.

When AvertD was being considered for F.D.A. approval, Dr. Hatoum and his colleagues wrote a public comment to the agency that said genomic variants used in the test were “highly confounded by genetic ancestry” and did not predict risk any better than chance when population stratification is not taken into account. (At a 2022 meeting, Solvd’s chief executive claimed AvertD adjusted adequately for population stratification; the F.D.A. did not reply directly to a question about this claim.)

Dr. Hatoum’s work also demonstrated that these tests could mislabel people who are descended from two or more groups that were historically isolated from each other as being at risk of addiction. Since most African Americans have such admixed ancestry, this could bias the test into identifying them as high risk.

“This means that the model can use the genetic markers of African American status to predict opioid use disorder, instead of using any biologically plausible genetic markers,” said D. Marzyeh Ghassemi, a professor at M.I.T. who studies machine learning in health care.

In an email, Solvd said that in its clinical study of AvertD, “no differences in performance were seen by race, ethnicity or gender,” adding that it was undertaking postmarketing tests as required by the F.D.A. to further evaluate the test. The company also critiqued Dr. Hatoum’s methodology, saying that his study “asserts a false premise.”

The F.D.A. said in a statement that it “recognizes that in premarket decision making for devices, there generally exists some uncertainty around benefits and risks,” adding that it had nevertheless “determined that there is a reasonable assurance of AvertD’s safety and effectiveness.”

Still, the agency has placed a black box warning on AvertD, forbidding its use in chronic pain patients and emphasizing that the test cannot be used without patient consent. But this is unlikely to be a genuinely free choice: Patients may fear being stigmatized as potentially addicted if they don’t agree to be tested. And false negatives that incorrectly label someone as low risk may conversely lead to careless prescribing.

Amid the opioid crisis, it is understandable that regulators want to enable technologies that could reduce risk of addiction. But they must ensure that such algorithms and devices are transparent as to their methods and limitations and that they reduce racial and other biases rather than reinforce them.

Maia Szalavitz (@maiasz) is a contributing Opinion writer and the author, most recently, of “Undoing Drugs: How Harm Reduction Is Changing the Future of Drugs and Addiction.

The Times is committed to publishing a diversity of letters to the editor. We’d like to hear what you think about this or any of our articles. Here are some tips . And here’s our email: [email protected] .

Follow the New York Times Opinion section on Facebook , Instagram , TikTok , WhatsApp , X and Threads .

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Lakers vs. Nuggets Game 2: The three biggest mistakes Darvin Ham made during stunning second-half collapse

It took a number of mistakes for the lakers to lose to the nuggets on tuesday.

The Los Angeles Lakers had a very real chance to not only steal a game against the Denver Nuggets on Monday, but swing the entire series. They led by 20 in the third quarter. They are 28-14 at home, and a win would have given them home-court advantage in the series. A year ago, the Lakers won two series as underdogs because they swiped one of the first two games on the road and never lost at home. Would you have bet against LeBron James in a best-of-five series with three home games?

Instead, well, you've seen the final score by now. The Lakers blew a 20-point lead . They lost to Jamal Murray at the buzzer. Now, they're down 2-0 in the series. They've lost 10 in a row to the Nuggets as a whole. The daunting prospect of still needing to win a game in Denver looms over the rest of the series. The Lakers will get only two more tries. In NBA history, 449 teams have gained a 2-0 series lead. Only 33 of them have come back to win the series.

And yet, in many ways, the game felt familiar. The recent history of the Lakers-Nuggets rivalry has revolved around three close quarters followed by a crunch time bloodbath. Entering Monday, the Lakers and Nuggets had played a total of 18 clutch minutes since the beginning of the 2023 Western Conference Finals. Denver won those minutes by a whopping 32 points. In Game 2, the Nuggets won the final five minutes and eight seconds by 10 points. Time and time again, once the Nuggets decide they are ready to take the Lakers seriously, they blow them out of the water. Head coach Darvin Ham never knows what levers to pull in response.

It takes dozens of things going wrong to blow a 20-point third-quarter lead. You need bad shooting variance. You need a bad whistle. You need sloppy, isolated missteps that are the natural outcome of tense, playoff basketball games. But more than anything, you need strategic mistakes, and the Lakers made several of them. Here are the three biggest ones they made down the stretch to allow the Nuggets the chance they needed to complete the comeback:

The rotation

Spencer Dinwiddie played 13 minutes in Game 1. The Lakers lost those minutes by 12 points. Though his size carries defensive upside, he's lost too much of a step to defend in a series like this properly. Teams frequently leave him open from deep and dare him to shoot. His 3-point numbers in Los Angeles have generally been good. For his career, he's a 33.3% shooter from deep. All of that is more or less how his second-half minutes played out on Monday. He entered the game with the Lakers up 10. Roughly four minutes later, he left with the Lakers up five. The Nuggets didn't guard him. They didn't notice him on defense either.

Ham isn't exactly in an easy position here. The Lakers signed Gabe Vincent for exactly this series. They watched him defend Murray well in the Finals. He's made his shots in high-pressure playoff moments before. But Vincent missed most of the season. As a result, he never quite earned Ham's trust in the way the front office likely hoped. So he played just 15 minutes in this one. He wasn't great, and didn't make a shot. But he's at least a threat from deep and his defense this postseason has largely been good. Disperse those Dinwiddie minutes to Vincent and Austin Reaves , who played only 33 in Game 2, and the outcome is potentially different.

And then there's the higher stakes matter of when to play LeBron. James took a seat with 3:44 remaining in the third quarter for his typical second half rest. But Ham allowed him only one minute of reprieve before re-inserting him into the game. This did two things that would eventually come back to bite the Lakers. The first is that it left James visibly exhausted for the most important minutes of the game: the beginning of the fourth quarter, when Nikola Jokic traditionally takes his rest. The Nuggets lost 25 games all season... but only 14 of those losses saw Denver outscored during Jokic's minutes. In the other 11, Denver won the Jokic minutes but lost the game because of how badly their bench lost its own minutes. The key to beating Denver is winning these minutes. The Lakers lost the no-Jokic minutes by a point because James was gassed and Anthony Davis was out.

To address James' exhaustion, Ham ultimately removed him again when Jokic returned. Again, his absence was for less than two minutes, and the Nuggets made up four more points while he was out. Yes, having James on the court at the end of the third quarter helped, but it deprived the Lakers of their best chance of knocking the Nuggets out for good. If a rested James takes the court early in the fourth-quarter, their lead might have grown enough to be safe.

Going away from their best play

Look at how easy this looks...

The TNT broadcast told us when the second half began that James and Davis stayed on the court during halftime to work on their pick-and-roll. When the third quarter started, the Lakers proceeded to run that play, their best play, every single time down the court.

For five years, this has been their finishing move, their late-game checkmate to put a helpless opponent away. The Nuggets tried several coverages to slow it down. Jokic played a high-drop on the first video in that clip, so James snuck a pocket pass between the two defenders for the and-one. They blitzed the second, so James passed above them, giving Davis yet another easy layup over a too-small low-man (in this case, Murray). Jokic dropped lower on the third, and Murray shuffled over to help, so James nailed Reaves for an open 3.

Properly spaced, this is one of the best plays in basketball. There's no good answer to it unless you have two seven-footers that can switch (good luck with that). Go over the screen and James beats you to the rim. Go under, and now that he's evolved into a lethal shooter, he buries you from deep. Defend at the level of the screen and you're begging for a lob. Drop and you give James a head of steam to potentially draw a foul. Bring in a third defender and one of the best defenders in NBA history finds his shooter. It's an unguardable weapon that the Lakers are comfortable spamming when the need arises. Behind this play, the Lakers took their 15-point halftime lead up to 20.

And then? They... just... stopped... running it. Not fully, but they didn't run it anywhere close to often enough. James started using Rui Hachimura as his dance partner, often stashing Davis, the worst shooter in the starting lineup, in the strong side corner, where help could more easily arrive. D'Angelo Russell became a more frequent ball-handler as well, but his limited explosiveness gives him weaknesses that James doesn't have, especially against a Denver team that wins through discipline and intelligence rather than pure athletic skill.

Are there explanations for why the Lakers made this call? Sure. James and Davis were both exhausted by the end of the game. Maybe they lacked the stamina to abuse their best play as aggressively as they would have liked. The Nuggets also adjusted by switching that play more aggressively, so that when James got his screen, he ran into Aaron Gordon instead of Jokic. Ham had no response to this adjustment.

But in truth, it's a play the Lakers don't use often enough under any circumstances. For whatever reason, the Darvin Ham Lakers tend to get disorganized on offense and revert to isolation-ball far more often than the Frank Vogel versions did. The Lakers got sloppy down the stretch offensively when they'd found a play that consistently gave them easy points.

Not doubling Jokic

Before Game 2, Ham made an admission about defending Jokic that most coaches would secretly agree with. "It's like shit, I don't know what to do," he joked . To an extent, he's right. Jokic doesn't have a weakness. There's not a specific coverage that's going to stifle him. You're choosing between bad answers. It's just that Ham chose the worst answer down the stretch: he allowed Jokic to play one-on-one in the post.

Jokic scored three times in the final five minutes. Davis attempted to guard him one-on-one each time. Jokic shot just below 53% when guarded by Davis in last year's Western Conference Finals. It's a matchup he's completely comfortable in. He even managed to get Davis airborne on the final shot he took of the night, picking up an and-one for his troubles.

Ham did have an adjustment here, but not a successful one. On Denver's final two possessions of the game, the Lakers put James on Murray and switched his pick-and-roll with Jokic. Once Murray realized this, he took advantage to set up a quick jumper before the switch set-in that tied the score at 99. And then, on the final possession of the game, the Nuggets took the switch to get Davis on Murray on the perimeter. They cleared the strong side so Murray would be able to work one-on-one. He created just enough space over the exhausted Davis to drill the game-winner.

Was there necessarily a good answer to any of this? No. But it's worth noting that Nuggets not named Porter or Jokic did not make a single 3-pointer in Game 2. They obviously could've heated up if given the chance, but given the circumstances, some help on Denver's two best players likely would have been warranted. It's just easier to stomach losing on role-player 3-pointers when those shots haven't been falling all night.

Every Lakers player and coach bears some responsibility for the loss, but strategic mistakes are the single fastest way to get knocked out of the postseason. Simply put, Michael Malone out-coached Ham on Monday, and that robbed the Lakers of their best chance to win this series.

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Yealink (Stock Code: 300628) is a global brand that specializes in video conferencing, voice communications and collaboration solutions with best-in-class quality, innovative technology and user-friendly experience. As one of the best providers in more than 140 countries and regions, Yealink ranks No.1 in the global market share of SIP phone shipments (Global IP Desktop Phone Growth Excellence ...
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Opinion
A number of new tech companies want to solve the opioid crisis with algorithms. It's a flawed and potentially harmful proposition.
Lakers vs. Nuggets Game 2: The three biggest mistakes Darvin Ham made
The rotation. Spencer Dinwiddie played 13 minutes in Game 1. The Lakers lost those minutes by 12 points. Though his size carries defensive upside, he's lost too much of a step to defend in a ...
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