Yealink CP860 SERIES, Руководство администратора

Страница: 700 / 1126

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
674
Parameter Permitted Values Default
1
-Enabled
If it is set to 0 (Disabled), the IP phone can neither send nor receive text message(s).
Note:
It is not applicable to CP920 IP phones.
Web User Interface:
None
Phone User Interface:
None
Multicast Paging
Multicast paging allows IP phones to send/receive Real-time Transport Protocol (RTP) streams
to/from the pre-configured multicast address(es) on the desired channel without involving SIP
signaling. Up to 31 listening multicast addresses can be specified on the IP phone.
Yealink IP phones support the following 31 channels:

0
: Yealink IP phones running firmware version 80 or prior and third-party devices
supporting paging with Yealink IP phones running firmware version 80 or prior (e.g., Cisco
IP phones) are all grouped into the channel 0. This is for compatibility with the old Yealink
IP phones and third-party devices.

1 to 25
: each corresponds to the Polycom’s channel 1 to 25 respectively. This is for
compatibility with the Polycom IP phones.

26 to 30
: This is for separate communication among the Yealink IP phones supporting
these channels.
The IP phones will automatically ignore all incoming multicast paging calls on the different
channel.
Sending RTP Stream
Users can send an RTP stream without involving SIP signaling by pressing a configured
multicast paging key or a paging list key. A multicast address (IP: Port) and a channel (0 to 30)
should be assigned to the multicast paging key, which is defined to transmit RTP stream to a
group of designated IP phones on the desired channel.
When the IP phone sends the RTP stream to a pre-configured multicast address belongs to a
desired channel, each IP phone preconfigured to listen to the multicast address on the same
channel can receive the RTP stream. When the originator stops sending the RTP stream, the
subscribers stop receiving it.