Required information
There are 3 primary pieces of information required to register a VoIP extension on your Yealink device:
- SIP Server URL — The server address your phone connects to
- Username — Your unique extension username
- Password — The secure password for authentication
You'll find this information in the manage screen of the extension you're registering:
Access the web interface
To configure your Yealink phone, you'll access its web interface from a computer on the same network.
Finding your phone's IP address
On the phone, go to MENU > STATUS and look for the IPv4 address.
Browse to this IP address from your computer to access the login screen:
Configure account registration
Once logged in, navigate to Account > Register:
Fill in the following fields:
- Line Active — Set to ON
- Label — Set to the 4-digit extension alias (e.g., 1001)
- Display Name — Set to the 4-digit extension alias
- Register Name — Set to the username from portal
- Username — Set to the username from portal
- Password — Set to the password from portal
- Server Host — Set to the Server URL from portal
- Server Expires — Set to 180
Configure NAT settings
Scroll to the bottom of the Account page and change the NAT setting to STUN:
Click Confirm to save your changes:
Configure STUN server
Navigate to Network > NAT. Set STUN to Active and add the Siptalk STUN server:
Click Confirm to save the changes.
Verify registration
After completing these steps, your phone should register within 30 seconds. Verify successful registration by:
- Checking the phone display — it should show the extension number
- Looking in the web interface — Account status should show "Registered"
- Making a test call to another extension or your mobile
Troubleshooting
Phone won't register
Double-check the username and password are entered correctly. Ensure your firewall allows SIP traffic (port 5060) and RTP ports (10000-20000).
One-way audio
This is usually a NAT issue. Verify STUN is configured correctly and NAT is set to STUN mode on the Account page.
Can't access web interface
Ensure you're on the same network subnet as the phone. Try connecting your computer directly to the same switch or access point.
Registration drops intermittently
Check your internet connection stability. Ensure Server Expires is set to 180 seconds or higher. Some routers with SIP ALG enabled can cause issues — try disabling SIP ALG in your router settings.