Yealink SIP-T48G Administrator's Manual page 303

Parameters
2-Ring2.wav
3-Ring3.wav
4-Ring4.wav
5-Ring5.wav
6-Ring6.wav
7-Ring7.wav
8-Ring8.wav
9-Silent.wav
10-Splash.wav
Web User Interface:
Settings->Ring->Internal Ringer File
Phone User Interface:
None
To configure distinctive ring tones via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
4. Select the desired value from the pull-down list of Distinctive Ring Tones.
5. Click Confirm to accept the change.
Configuring Advanced Features
Permitted Values Default
289