Gateway-To-Cisco Sip Ip Phone-Successful Call Setup And Call Hold - Cisco 7960 Administrator's Manual

Appendix B SIP Call Flows
Gateway-to-Cisco SIP IP Phone—Successful Call Setup and Call
Hold
Figure B-2 illustrates a successful gateway-to-Cisco SIP IP phone call setup and
call hold. In this scenario, the two end users are User A and User B. User A is
located at PBX A. PBX A is connected to Gateway 1 (SIP Gateway) via a T1/E1.
User B is located at a Cisco SIP IP phone. Gateway 1 is connected to the Cisco
SIP IP phone over an IP network.
The call flow is as follows:
1.
2.
3.
4.
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User A calls User B.
User B answers the call.
User B puts User A on hold.
User B takes User A off hold.
Call Flow Scenarios for Successful Calls
Cisco SIP IP Phone 7960 Administrator Guide
B-7