Appendix B SIP Call Flows
Call Flow Scenarios for Successful Calls
Figure B-8 Cisco SIP IP Phone-to-Cisco SIP IP Phone Call Transfer with Consultation
SIP IP |
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| SIP IP | SIP IP | ||
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| Phone | ||||
IP Network | Phone User B | |||||
Phone User A | User C | |||||
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| |||||
IP |
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| IP | IP | |
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| ||||
1.INVITE B
2.180 Ringing
3.200 OK
4.ACK
5.INVITE (c=IN IP4 0.0.0.0)
6.200 OK
7.ACK
A is put on hold. The RTP channel between A and B is torn down.
8. INVITE C
14. BYE (Also: C)
15. 200 OK
9. 180 Ringing
10. 200 OK
11. ACK
12. BYE
13. 200 OK
B and C are disconnected.
A and B are disconnected.
16.INVITE C (Requested by B)
17.180 Ringing
18.200 OK
19.ACK
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| Cisco SIP IP Phone 7960 Administrator Guide |
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