Yealink T5 Series Advanced Setup Guide

The Yealink T5 is a series of business IP phones that you can use with your Telzio phone system. There are currently 9 different models in the T5 series, offering up to 16 lines and simple web-based configuration.

In this article, you'll learn how to configure phones in the original Yealink T5 series to use with Telzio.

Important notes:

  • You must have a user before you can configure your phone.
    Learn more about Getting Started with Users.
  • If you’re using an IP phone that was used with another provider, do a factory reset on the phone before you get started.
  • This guide pertains to specific phones in the Yealink T5 series, including the  SIP-T56A, SIP-T57W, SIP-T58A (with and without camera),  For instructions on other Yealink T5 series phones, click here.

Log into the phone’s interface

  1. Press the phone's "Settings" icon on the touch screen. Press the "Network" button in the Status menu and then the IPv4 button. This will show the phone's IP address, which could look something like this:
  2. Type the IP address into your web browser's address field and press Enter.
  3. Login with the following username and password:
    Username: admin
    Password: admin

Configure the phone with your username

After you log in, you will see the phone’s status page. This shows all accounts configured on the phone and other useful data.

  1. From the green top-menu, press Account.
  2. Enter the following settings:
    Line Active: Enabled
    Label: Enter the name you want displayed on the phone
    Display Name: Your Name
    Register Name: Your Username (All lowercase)
    Username: Your Username (All lowercase) 
    Password: Your Password (Case Sensitive)
    SIP Server 1
    Server Host:

    Leave the rest of the settings as they are by default.

  3. Press Confirm
  4. The phone is now ready to make and receive calls.

Optionally: Configure Busy Lamp Field (BLF) keys.

BLF keys allow you to utilize the line keys on your phone for quickly dialing other users in your company, see who is available or on a call and even pick up calls for your co-workers.

  • A green key light indicates that a user is available
  • A red key light indicates that a user is currently talking
  • A blinking red light indicates that a user’s phone is currently ringing
  • A turned off key light indicates that a user is not logged in
  1. From the green top-menu, select “DssKey“.
  2. Select which key you want to configure. Your phone may have multiple pages, and you can select a different page of keys from the left-hand menu (For example Line Key 8-14).
  3. Enter the following settings:
    Type: BLF
    Value: Username of the user you want to display info for
    Label: The text you want to show in your phone’s display next to the key