![background image](http://html.mh-extra.com/html/linksys/rtp300-broadband-router-with-2-phone-ports/rtp300-broadband-router-with-2-phone-ports_administration-manual_1923888124.webp)
Linksys ATA Administration Guide
124
Line page
Voice tab > Line page >
Line Enable section
Voice tab > Line page >
Streaming Audio Server (SAS) section
Field
Description
Line Enable
To enable this line for service, select yes. Otherwise, select no.
The default is
yes
.
Trunk Enable
To add this line to a trunk group, choose the trunk group number. Otherwise,
choose none. This feature is available on the SPA8000 only.
The default is
none
.
Field
Description
SAS Enable
To enable the use of the line as a streaming audio source, select yes.
Otherwise, select no. If enabled, the line cannot be used for outgoing calls.
Instead, it auto-answers incoming calls and streams audio RTP packets to the
caller.
The default is
no
.
SAS DLG Refresh Intvl
If this value is not zero, it is the interval at which the streaming audio server
sends out session refresh (SIP re-INVITE) messages to determine whether the
connection to the caller is still active. If the caller does not respond to the
refresh message, the ATA device ends this call with a SIP BYE message. The
range is 0 to 255 seconds (0 means that the session refresh is disabled).
The default is
30
.
SAS Inbound RTP Sink
This setting works around devices that do not play inbound RTP if the
streaming audio server line declares itself as a send-only device and tells the
client not to stream out audio. Enter a Fully Qualified Domain Name (FQDN)
or IP address of an RTP sink; this value is used by the streaming audio server
line in the SDP of its 200 response to an inbound INVITE message from a
client.
The purpose of this parameter is to work around devices that do not play
inbound RTP if the SAS line declares itself as a send-only device and tells the
client not to stream out audio. This parameter is a FQDN or IP address of a
RTP sink to be used by the SPA SAS line in the SDP of its 200 response to
inbound INVITE from a client. It will appear in the c = line and the port
number and, if specified, in the m = line of the SDP. If this value is not
specified or equal to 0, then c = 0.0.0.0 and a=sendonly will be used in the
SDP to tell the SAS client to not to send any RTP to this SAS line. If a non-zero
value is specified, then a=sendrecv and the SAS client will stream audio to
the given address. Special case: If the value is $IP, then the SAS line’s own IP
address is used in the c = line and a=sendrecv. In that case the SAS client will
stream RTP packets to the SAS line.
The default value is empty.