Appendix B SIP Call Flows

Call Flow Scenarios for Successful Calls

Figure B-7 Cisco SIP IP Phone-to-Cisco SIP IP Phone Call Transfer without Consultation

SIP IP

 

 

SIP IP

SIP IP

 

 

Phone

IP Network

Phone User B

Phone User A

User C

 

 

IP

 

 

 

IP

IP

 

 

 

1.INVITE B

2.180 Ringing

3.200 OK

4.ACK

2-way RTP channel

5.BYE (Also: C)

6.200 OK

A and B are disconnected.

7.INVITE C (Requested by B)

8.180 Ringing

9.200 OK

10.ACK

2-way RTP channel

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Cisco SIP IP Phone 7960 Administrator Guide

B-32

78-10497-02

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