Yealink T56A

Yealink T56A is a desk phone which can be bought directly from Telavox. Hardware that is bought directly from Telavox is automatically provisioned towards us, which means that no manual configuration is required. This hardware only needs power and a network connection to work properly with the Telavox telephony (provided it is connected to a user/extension). 

Here is a little information about Yealink T56A: 

• 7-inch colour display (touch)
• Bluetooth 4.0
• USB-outlet (for headset, storage etc.)
• Android-based operating system (multiple built-in apps and functions)
• English language
• LAN-port
• PoE (Power over Ethernet)
• BLF-support

The video below shows the phone, please note that the camera add-on is not included or purchasable through Telavox. 

More information about the product can be found on the Yealink website.

Yealink CP960

Yealink CP960 is a conference phone which can be bought directly from Telavox. Hardware that is bought directly from Telavox is automatically provisioned towards us, which means that no manual configuration is required. This hardware only needs power and a network connection to work properly with the Telavox telephony (provided it is connected to a user/extension). 

Here is a little information about Yealink CP960: 

• 5-inch touch-display
• HD-sound
• Bluetooth
• PoE (Power over Ethernet)
• Possibility to complement with extra microphones (not through Telavox)

The video below shows the conference phone. Please note that the extra microphones (CPW90) are not included or purchasable through Telavox. 

Further information about the product can be found on the Yealink website. 

Yealink T21P E2

This model is automatically provisioned towards Telavox, which means that no manual configuration is required. This hardware only needs power and a network connection to work properly with the Telavox telephony (provided it is connected to a user/extension). 

Provisioning parameters that are supported on Yealink T21P E2: 

• Automatic Firmware Upgrade
• Call functionality 
• MWI (Message Waiting Indicator)
• BLF (Busy Lamp Field)
• Remote Phonebook
• Timezone 
• Language

Troubleshooting

What to do, when...

The phone does not turn on

• Ensure the power supply is connected properly.
• If using PoE (Power over Ethernet), confirm that the Ethernet cable is connected to a PoE-enabled switch or injector.
• Try using a different power adapter or Ethernet cable to rule out issues with the current cable or power source.

There is no dial tone

• Check the handset connection. Make sure it is securely connected to the handset port.
• Ensure the phone is registered with the VoIP server (check the screen for a registration status).
• Restart the phone by unplugging the power, waiting a few seconds, and then plugging it back in.

The phone is not registering

• Confirm that the network cable is properly connected and that the network port is active.
• Ensure the network settings are correct. You may need to check IP address, subnet mask, gateway, and DNS settings under the Network menu.
• Verify SIP server settings such as the server address, username, and password.
• Restart the phone after checking and updating settings.

The audio quality is poor

• Check the network connection for issues (replace cables if needed).
• Make sure other network-intensive activities are not causing congestion.
• Enable Quality of Service (QoS) settings on your router to prioritize voice traffic.
• Go to Menu > Features > Audio and adjust the echo cancellation and other audio settings.

There are display issues -  the screen is blank or frozen

• Restart the phone.
• If the screen is blank but the phone has power, increase the brightness under Menu > Settings > Display.
• If the screen remains unresponsive, perform a factory reset.

Calls cannot be made or received

• Ensure the phone is registered with the VoIP server.
• Verify SIP account credentials and confirm with your service provider that there are no account issues.
• Check if call forwarding or Do Not Disturb (DND) is enabled under Menu > Features and disable if necessary.
• Restart the phone and the network equipment.

There is one-way audio (you can hear the other party, but they cannot hear you and vice versa)

• Check NAT settings and configure them appropriately under Menu > Network > Advanced.
• Confirm firewall settings on your network and adjust them to allow VoIP traffic.
• Ensure that SIP ALG is disabled on your router, as it can sometimes interfere with VoIP traffic.

The phone does not connect to the network

• Confirm that the Ethernet cable is securely connected and that the port is active.
• Check the network settings, including DHCP (if used), or set a static IP manually under Menu > Network > WAN Port.
• Verify if other devices can connect to the same network to rule out network issues.
• Restart both the phone and network equipment (e.g., router, switch).

There are firmware update issues

• Download the latest firmware from Yealink’s official website and save it to your computer.
• Access the phone’s web interface by entering its IP address into a browser.
• Go to Upgrade > Firmware Update, select the firmware file, and upload it.
• Do not interrupt the power supply or network connection during the update process.

Good to know...

How do I do a factory reset?

• Press and hold the OK button on the phone for 10 seconds until the reset screen appears.
• Select OK to confirm the factory reset.
• Be aware that a factory reset will erase all custom configurations, including SIP account settings, network configurations, and custom settings.

How do I access the web interface?

• Find the phone’s IP address by going to Menu > Status on the phone.
• Enter the IP address in a web browser.
• Log in using the default credentials (usually admin for both username and password, unless changed).
• You can change network settings, update firmware, configure SIP accounts, and more through the web interface.
  
  

It is also good to check if you have any call routings active on the terminal's number or call blocks - as well as if there are any settings related to your incoming calls.

Yealink T31G

This model is automatically provisioned towards Telavox, which means that no manual configuration is required. This hardware only needs power and a network connection to work properly with the Telavox telephony (provided it is connected to a user/extension).

Provisioning parameters that are supported on Yealink T31G: 

• Automatic Firmware Upgrade
• Call functionality 
• MWI (Message Waiting Indicator)
• BLF (Busy Lamp Field)
• Remote Phonebook
• Timezone 
• Language

Troubleshooting

What to do, when...

The phone does not turn on

• Ensure the power adapter is securely connected, or if using Power over Ethernet (PoE), make sure the Ethernet cable is connected to a PoE-enabled switch or injector.
• If using an adapter, try using a different power outlet or adapter to eliminate issues with the power supply.
• For PoE, test with a different Ethernet cable or port to confirm functionality.

There is no dial tone

• Verify the handset and cord are securely connected to the correct ports.
• Check if the phone is registered with the SIP server. The registration status should be displayed on the phone screen.
• If unregistered, troubleshoot the network connection and SIP account settings (see below).

The phone is not registering

• Confirm the network cable is connected properly and that the network port is active.
• Check network settings: go to Menu > Status to view IP address and network connection status.
• Verify the SIP account settings (e.g., server address, username, password) under Menu > Settings > Advanced Settings > Account.
• Restart the phone after confirming settings.

The audio quality is poor

• Ensure a stable network connection by testing with a different Ethernet cable if needed.
• Check for network congestion and try to limit other bandwidth-heavy activities.
• Enable Quality of Service (QoS) on the router to prioritize voice traffic.
• Adjust audio settings in the phone’s web interface under Settings > Audio.

There are display issues -  the screen is blank or frozen

• Ensure the phone has power and the screen brightness is adjusted properly under Menu > Basic Settings > Display.
• Restart the phone by unplugging it and plugging it back in after a few seconds.
• If the screen remains unresponsive, consider performing a factory reset (see below).

Calls cannot be made or received

• Confirm that the phone is registered with the SIP server (see above).
• Check for any Do Not Disturb (DND) settings under Menu > Features and disable it if enabled.
• Verify SIP server connectivity and account status with your service provider.
• Restart both the phone and network equipment (router, switch, etc.).

There is one-way audio (you can hear the other party, but they cannot hear you and vice versa)

• Check NAT (Network Address Translation) settings in the phone’s web interface under Network > Advanced Settings and configure them if needed.
• Disable SIP ALG (Application Layer Gateway) on your router, as it can interfere with audio transmission.
• Check firewall settings and ensure the necessary VoIP ports are open.

The phone does not connect to the network

• Make sure the Ethernet cable is securely connected to both the phone and the network switch or router.
• Go to Menu > Status > Network to check the phone’s IP address. If no IP address is assigned, check your DHCP settings, or set a static IP manually.
• Test with another device on the same network port to verify network functionality.
• Restart the phone and network devices (e.g., router, switch) to reset the network connection.

There are firmware update issues

• Download the latest firmware for the Yealink T31G from Yealink’s official website and save it to your computer.
• Access the phone’s web interface by entering its IP address into a web browser.
• Navigate to Upgrade > Firmware Update, select the firmware file, and upload it to the phone.
• Do not interrupt the update process to avoid issues.

Good to know...

How do I do a factory reset?

• Press and hold the OK button on the phone for 10 seconds until a reset prompt appears.
• Confirm the reset by selecting OK.
• Note that a factory reset will erase all custom configurations, including SIP account and network settings.

How do I access the web interface?

• Go to Menu > Status > Network to find the phone’s IP address.
• Enter the IP address into a web browser to access the web interface.
• Use the default username and password (usually admin for both) to log in, unless they’ve been changed.
• From the web interface, you can manage network settings, SIP accounts, firmware updates, and more.
  
  

It is also good to check if you have any call routings active on the terminal's number or call blocks - as well as if there are any settings related to your incoming calls.

Yealink T30P

Yealink-T30P is our most basic phone but with all the features that a regular user needs. The high quality and simple display that characterizes this model guarantee transparency and ease of use.

• The phone is very easy to install.
• We configure the names, numbers, time, and more, so when you buy it from us you just plug and play. 
• The phone can either be placed on a table or hung on a wall.

Official information can be found here.

Features Overview:

How do I make calls?
1. Transfer button to the right of #
2. Via the display
3. By pressing # number # during the call

 Is Busy Lamp Field (BLF) available? Can I see my colleagues on the phone?
No

 Are there profiles built-in so I can change like in Cisco?
No

Is it in Swedish
No

Can I pick up calls?
No

Does the LAN have an outlet?
Yes

Does it have Power over Ethernet (POE)?
Yes

Does it have network throughput?
2 x RJ45 10/100M Ethernet ports

Which headset jack is 2.5 or 3.5 mm?
Only the RJ9 socket

Does it have bluetooth?
No

How often does it provision itself?
Once an hour, just like all our other terminals.

How do I reset it?
In the Admin menu. Select Hardware Reset > Hold down the OK button for a few seconds, and then the display will appear warning Reset to Factory. Press OK again to confirm the reset.

The following Headsets are Tested and Work with T30P:

All headsets that have a cord with an RJ9 connection. Telavox recommends the Jabra BIZ 2400 + adapter cable.

It also works with Jabra Engage 65 however the answer buttons on the headset will not work, so you have to answer calls on the phone.

The phone can work with headsets other than Jabra Engage 65 but with those, there is nothing we can guarantee or provide support for.

Reset Yealink

 There are two ways to reset a Yealink:

1. Press the Reset button on your phone as shown in the image below.
2. Restart the phone by unplugging all cables, waiting 10 seconds, and then plugging them back in.
   
   

Language and Time Settings

Language Settings

As an administrator, you have the option to change the default language on the phone:

1. Log in to the Admin portal.
2. Click on Users.
3. Select the user.
4. Click on Other settings.
5. Change the language under Applications.

Perform a reset by pressing the Reset button on the phone so it retrieves the new settings from us and the language is set correctly (see above).

Time Settings

Perform a reset by pressing the Reset button on the phone so it retrieves the new settings from us and the time is set correctly.

Forwarding and Redirects

If you wish to set up forwarding or a voicemail on your phone, this should be done through the settings in your subscription with us, rather than on the landline phone.

Your subscription and its settings are connected to all your phones and extensions. On our FAQ article Profiles‍, you can read more about how to set up forwarding, redirects, voicemails, and call barring, etc.

Download the Telavox App

The Telavox app is not downloaded initially when you start using your hardware. To download the Telavox app, you, as the administrator, need to change the application language in the Admin portal for the user.

If the phone is provisioned in English, the hardware comes with the app pre-installed.

1. Log in to the Admin portal.
2. Click on Users.
3. Select the user.
4. Click on Other settings.
5. Change the language under Applications.

Then perform a reset by pressing the Reset button on the phone so it retrieves the new settings from us and the app is downloaded automatically.

Address Book and BLF

In our FAQ article How to add function keys (BLF) to Terminals‍ desk phones, you can read more about adding an address book on your hardware using to BLFs.

You can also learn more about groups and BLFs on desk phones in the article Groups, Visibility, and Sub-Admin.

Password for the Phone's UI

To access the phone's UI via the web, you will need the phone's password. If you need the password for specific hardware, feel free to Contact support‍ for assistance.