
Appendix D SIP Call Flows
Call Flow Scenarios for Successful Calls
Table D-4 Log Listings
1.REGISTER sip:192.168.2.81 SIP/2.0 Via: SIP/2.0/UDP 192.168.2.194
From: <sip:9301@192.168.2.81;user=phone>
To: <sip:9301@192.168.2.81;user=phone>
CSeq: 1 REGISTER
Contact: <sip:9301@192.168.2.194;user=phone;transport=udp>;expires=3600
2.SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.2.194
From: <sip:9301@192.168.2.81;user=phone>
To: <sip:9301@192.168.2.81;user=phone>
CSeq: 1 REGISTER
3.SIP/2.0 407 Proxy Authentication Required Via: SIP/2.0/UDP 192.168.2.194
From: <sip:9301@192.168.2.81;user=phone>
To: <sip:9301@192.168.2.81;user=phone>
CSeq: 1 REGISTER
4.REGISTER sip:192.168.2.81 SIP/2.0 Via: SIP/2.0/UDP 192.168.2.194
From: <sip:9301@192.168.2.81;user=phone>
To: <sip:9301@192.168.2.81;user=phone>
CSeq: 2 REGISTER
Contact: <sip:9301@192.168.2.194;user=phone;transport=udp>;expires=3600
5.SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.2.194
From: <sip:9301@192.168.2.81;user=phone>
To: <sip:9301@192.168.2.81;user=phone>
CSeq: 2 REGISTER
6.SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.194
From: <sip:9301@192.168.2.81;user=phone>
To: <sip:9301@192.168.2.81;user=phone>
CSeq: 2 REGISTER
Contact: <sip:9301@192.168.2.194;user=phone;transport=udp>;expires=“tue, 23 Oct 2001 22:37:56 GMT”
Expires: 3600
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)
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