Cisco Systems SPA9000 manual Call Feature Settings section

SPA9000 Field Reference

Voice tab

B

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 SPA9000’s 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 “sendonly” 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 is 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.

Default: blank

Voice tab > FXS 1/2 page

Call Feature Settings section

Blind Attn-Xfer Enable	Enables the SPA9000 to perform an attended transfer
	operation by ending the current call leg and performing a
	blind transfer of the other call leg. If this feature is disabled,
	the SPA9000 performs an attended transfer operation by
	referring the other call leg to the current call leg while
	maintaining both call legs. To use this feature, select yes.
	Otherwise, select no.
	Default: no
MOH Server	User ID or URL of the auto-answering streaming audio server.
	When only a user ID is specified, the current or outbound
	proxy is contacted. Music-on-hold is disabled if the MOH
	Server is not specified.
Xfer When Hangup Conf	Makes the SPA9000 perform a transfer when a conference
	call has ended. Select yes or no from the drop-down menu.
	Default: Yes

SPA9000 Voice System Administration Guide 246