Yealink SIP-T19 E2 T4 Series, Administrator'S Manual

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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series IP Phones
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signaling. Up to 31 listening multicast addresses can be specified on the IP phone.
Yealink IP phones support the following 31 channels:

0
: Broadcasts are sent to channel 0. Note that the Yealink IP phones running firmware
version 80 or earlier can be regarded as listening to channel 0. It is the default channel.

1 to 25
: Broadcasts are sent to channel 1 to 25. We recommend that you specify these
channels when broadcasting with Polycom IP phones which have 25 channels you can
listen to.

26 to 30
: Broadcasts are sent to channel 26 to 30. We recommend that you specify these
channels when broadcasting with Yealink IP phones running firmware version 81 or later.
The IP phones can only send and receives broadcasts to/from the listened channels. Other
channels’ broadcasts will be ignored automatically by the IP phone.
Sending RTP Stream
Users can send an RTP stream without involving SIP signaling by pressing a configured multicast
paging DSS key or a paging list DSS key. A multicast address (IP: Port) and a channel (0 to 30)
should be assigned to the multicast paging DSS 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 belonging 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.
Procedure
Configuration changes can be performed using the following methods.
Central
Provisioning
(Configuration
File)
<y0000000000xx>.cf
g
Specify a multicast codec for the IP phone to
send the RTP stream.
Parameter:
multicast.codec
Configure the multicast IP address and port
number for a paging list DSS key.
Parameter:
multicast.paging_address.X.ip_address
Configure the multicast paging group name
for a paging list DSS key.
Parameter:
multicast.paging_address.X.label
Configure the channel of the multicast
paging group for a paging list DSS key.