Cisco Systems SPA9000 manual Called Caller Forward Target Remarks Party

Configuring Phone Lines and Calling Routing Behavior	4
Call Forwarding Support on SPA9000

SPA9000 supports the call forward scenarios listed in the following table.

Called	Caller	Forward Target	Remarks
Party
Client	Client	Client station	Proxy only; no direct
station	station		involvement
Client	Client	External	Very similar to calling external
station	station		number
Client	External	Client station	ACKs the 302 from called party.
station			Then INVITEs the target.
			NOTE If the original INVITE is
			forked to more than one client
			station, call forward is not
			performed.
Client	External	External	ACKs the 302 from called party.
station			Sends 200 to caller, then blind
			REFERs caller to target.
			NOTE If the original INVITE is
			forked to more than one client
			station, call forward is not performed
External	Client	External	ACKs the 302 from called party,
	station		then INVITEs the target

NOTE When an incoming call from the ITSP is forked to multiple client stations, the SPA9000 does not honor the 3xx response returned by any of the client stations. If you wish the call to be forwarded to voicemail or another client station when it is not picked up, you can specify the optional “cfwd=target” syntax in the Contact List.

SPA9000 Voice System Administration Guide 83