R E V I E W D R A F T # 1 — C I S C O C O N F I D E N T I A L
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Cisco WRP500 Administration Guide
Appendix A Advanced Voice Fields
Line page
Voice tab > Line page >
NAT Settings section
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 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.
NAT Mapping Enable
To use externally mapped IP addresses and SIP/RTP ports in SIP
messages, select yes. Otherwise, select no.
The default is
no
.
NAT Keep Alive Enable
To send the configured NAT keep alive message periodically, select
yes. Otherwise, select no.
The default is
no
.
NAT Keep Alive Msg
Enter the keep alive message that should be sent periodically to
maintain the current NAT mapping. If the value is $NOTIFY, a
NOTIFY message is sent. If the value is $REGISTER, a
REGISTER message without contact is sent.
The default is $
NOTIFY
.
NAT Keep Alive Dest
Destination that should receive NAT keep alive messages. If the
value is $PROXY, the messages are sent to the current proxy server
or outbound proxy server.
The default is $
PROXY
.
