Yealink SIP-T20 User Manual page 101

3. Select the desired value from the pull-down list of Paging Priority A ctive.
4. Enter the multicast IP address(es) and port number(e.g., 224.5.6.20:10008) which the
phone listens for incoming RTP multicast in the L istening Address field.
The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
5. Enter the label in the L abel field.
Label will appear on the LCD screen when receiving the RTP multicast.
6. Click Conf irm to accept the change.
Not e
The priorities of listening addresse s are predefined: 1 wi th the highest priori ty, 10 wi th the
lowest.
Both the multicast paging sender and the receiver 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 to the SIP INVITE messages and
immediately plays audio from some source located anywhere (LAN, Internet) to the
held party. Contact your system administrator for the SIP URI.
To configure music on hold server via web user interface:
1. Click on A ccount.
2. Select the desired account from the pull-down list of A ccount.
Advanced Phone Features
89