Yealink CP960 - Page 207

Advanced Phone Features
207
3. Enter the SIP URI (e.g., sip:moh@sip.com) in the Music Server URI field.
4. Click Confirm to accept the change.
When you place a call on hold, music will be played to the held party.
Note
For this feature to function, all involved parties cannot use encrypted RTP (SRTP).
Music on hold server is configurable via web user interface only.