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C-7
Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)
OL-4277-01
Appendix C SIP Call Flows
Call Flow Scenarios for Successful Calls
Cisco IP Phone-to-Cisco IP Phone—Basic SIP to SIP Call
without Authentication
Figure C-3 illustrates a call from one Cisco IP Phone to another where
authentication by the SIP server is not required. Table C-5 describes these actions
in detail. Table C-6 shows the log of these actions.
The call flow is as follows:
1. Call is established between Cisco IP Phone A and Cisco Cisco IP Phone B.
2. Call is terminated.
5.
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.2.163:5060;received=192.168.2.163
Call-ID: 948614169@192.168.2.163
From: <sip:9313@cisco.com;user=phone>;tag=118440597
To: <sip:9313@cisco.com;user=phone>
CSeq: 2 REGISTER
Content-Length: 0
6.
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.163:5060;received=192.168.2.163
Call-ID: 948614169@192.168.2.163
From: <sip:9313@cisco.com;user=phone>;tag=118440597
To: <sip:9313@cisco.com;user=phone>
CSeq: 2 REGISTER
Contact: <sip:9313@192.168.2.163:5060;user=phone;transport=udp>;expires="Fri, 02
May 2003 00:26:51 GMT"
Expires: 3600
Content-Length: 0
Table C-4 Log Listing (continued)