Linksys SPA922 Cisco SPA9000 Voice System Administration Guide - Page 85

Configuring Phone Lines and Calling Routing Behavior Call Forwarding Support on SPA9000 4 SPA9000 supports the call forward scenarios listed in the following table. Called Party Client station Client station Client station Client station External Caller Client station Client station External External Client station Forward Target Remarks Client station External Client station External External Proxy only; no direct involvement Very similar to calling external number ACKs the 302 from called party. Then INVITEs the target. NOTE If the original INVITE is forked to more than one client station, call forward is not performed. ACKs the 302 from called party. 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 ACKs the 302 from called party, 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