Call Flow Scenarios for Successful Calls
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Simple Call Hold
Figure B-4
places the other on hold and then returns to the call. In this call flow scenario, the two end users are
User A and User B. User A and User B are both using Cisco SIP IP phones, which are connected via an
IP network.
The call flow scenario is as follows:
1.
2.
3.
4.
5.
Cisco SIP IP Phone Administrator Guide, Release 6.x and 7.x
B-8
Network Call Forwarding (Unconditional), page B-31
Network Call Forwarding (Busy), page B-33
Network Call Forwarding (No Answer), page B-36
Three-Way Calling, page B-38
Call from a Cisco SIP IP Phone to a Gateway Acting As a Backup Proxy in a SIP Network, page
B-42
Call from a Cisco SIP IP Phone to a Cisco SIP IP Phone Using a SIP Backup Proxy, page B-44
Call from a Cisco SIP IP Phone to a Cisco SIP IP Phone Using a SIP Emergency Proxy, page B-45
illustrates a successful call between Cisco SIP IP phones in which one of the participants
User A calls User B.
User B answers the call.
User B places User A on hold.
User B takes User A off hold.
The call continues.
Appendix B
SIP Call Flows