Answer - Cisco 7960 Administrator's Manual

Call Flow Scenarios for Successful Calls
Cisco SIP IP Phone-to-Cisco SIP IP Phone Network Call
Forwarding (No Answer)
Figure B-11 illustrates successful call forwarding between Cisco SIP IP phones
in which User B has requested call forwarding from the network in the event there
is no answer. When User A calls User B, the proxy server tries to place the call to
Cisco SIP IP phone B and, if there is no answer, the call is transferred to Cisco
SIP IP phone C. In this call flow scenario, the end users are User A, User B, and
User C. They are all using Cisco SIP IP phones, which are connected via an IP
network.
The call flow scenario is as follows:
1.
2.
3.
4.
Cisco SIP IP Phone 7960 Administrator Guide
B-48
User B requests that if their phone (Cisco SIP IP phone B) is not answered
within a set amount of time the network should forward incoming calls to
Cisco SIP IP phone C.
User A calls User B.
User B's phone is not answered.
The network transfers the call to Cisco SIP IP phone C.
Appendix B SIP Call Flows
78-10497-02