Appendix D SIP Call Flows

Call Flow Scenarios for Successful Calls

Table D-2 Log Listings

1.REGISTER sip:192.168.2.97 SIP/2.0 Via: SIP/2.0/UDP 192.168.2.194

From: <sip:9301@192.168.2.97;user=phone>

To: <sip:9301@192.168.2.97;user=phone>

Call-ID: 88397253@192.168.2.194

CSeq: 1 REGISTER

Contact: <sip:9301@192.168.2.194;user=phone;transport=udp>;expires=3600 User-Agent; Cisco ATA v2.10 ata186 (0705a)

Content-Length: 0

2.SIP/2.0 100 Trying

Via: SIP/2.0/UDP 192.168.2.194

Call-ID: 88397253@192.168.2.194

From: <sip:9301@192.168.2.97;user=phone>

To: <sip:9301@192.168.2.97;user=phone>

CSeq: 1 REGISTER

Content-Length: 0

3.SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.2.194

Call-ID: 88397253@192.168.2.194

From: <sip:9301@192.168.2.97;user=phone>

To: <sip:9301@192.168.2.97;user=phone>

CSeq: 1 REGISTER

Contact: <sip:9301@192.168.2.194;user=phone;transport=udp>;expires=“tue, 23 Oct 2001 14:24:57 GMT”

Expires: 3600

Content-Length: 0

Cisco ATA-to-SIP Server—Registration with Authentication

Figure D-2illustrates the Cisco ATA registering with the SIP server. Authentication is required for registration.

The call flow is as follows:

1.Cisco ATA requests registration.

2.SIP server requests authentication credential.

3.Authentication is received and registration is completed.

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)

 

OL-3410-01

D-3

 

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Cisco Systems ATA186I2ARF manual Cisco ATA-to-SIP Server-Registration with Authentication, Table D-2 Log Listings