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    Configure a Yealink T21 with a VoIPOffice extension

    Learn how to set up a Yealink T21 phone to make and receive calls with a VoIPOffice extension.

    The following guide is for configuring a Yealink T21 with a VoIPOffice extension.

    You will need:

    • The VoIPOffice IP address – e.g. '77.240.xxx.xxx'
    • The Extension number – e.g. '1001'
    • The extension password/Secret (can be found by going to the edit mode of that specific extension, see the screenshot below)

    1-) Connect the handset and the computer to the same network using an Ethernet cable.

    2-) Find the IP address of the handset by pressing Menu -> Status

    3-) On a computer connected to the same router/network as the Yealink T21P phone, open the web browser and type the full IP address into the address bar.

    4-) On the login screen that will appear, enter 'admin' (Case sensitive) as both username and password.

    5-) Once logged in, from the menu, select the 'Account' tab, then select an account (e.g. Account 2) from the drop down menu, enter the details below:

    Line Active: Set to enable

    Label: The chosen extension number (e.g. 1001)

    Display Name: Any name

    Register Name: The chosen extension number

    User name: The chosen extension number

    Password: The extension's password (secret)

    Server Host: The IP address of your VoIPOffice (e.g.   Port: 5060

    Server Expires: 3600

    The rest should remain as default.

    6-) Click 'Confirm' to save and apply your changes.

    7-) To check if the phone is registered, dial 902 from the handset. If you hear a congratulation message, then the registration was successful.


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