Yealink SIP-T23P User Manual page 125

place the previous multicast paging call on hold. If disabled, the phone will
automatically ignore all incoming multicast paging calls.
To configure multicast listening addresses via web user interface:
1. Click on Directory->Multicast IP.
2. Select the desired value from the pull-down list of Paging Barge.
3. Select the desired value from the pull-down list of Paging Priority Active.
4. Enter the multicast IP address(es) and port number (e.g., 224.5.6.20:10008) which
the phone listens to for incoming RTP multicast in the Listening Address field.
The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
5. Enter the label in the Label field.
Label will appear on the LCD screen when receiving the RTP multicast.
6. Click Confirm to accept the change.
Note
The priorities of listening addresses are predefined: 1 with the highest priority, 10 with the
lowest.
Both the multicast paging sender and receiver's phones play a warning tone when
establishing a multicast paging call.
Multicast listening addresses is configurable via web user interface only.
Music on hold (MoH) is the business practice of playing recorded music to fill the silence
that would be heard by the party placed on hold. To use this feature, you should specify
a SIP URI pointing to a Music on hold server account. When a call is placed on hold, the
phone will send a SIP INVITE message to the Music on Hold Server account. The Music
on Hold Server account automatically answers the SIP INVITE messages and
Advanced Phone Features
115