Appendix B SIP Call Flows
Call Flow Scenarios for Successful Calls
Figure B-5 Cisco SIP IP Phone-to-Cisco SIP IP Phone Call Hold with 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
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.
14.INVITE (c=IN IP4
15.200 OK
16.ACK
A is taken off hold. The RTP channel between A and B is reestablished.
8.INVITE C
9.180 Ringing
10.200 OK
11.ACK
12.BYE
13.200 OK
B is disconnected from C.
41466
|
| Cisco SIP IP Phone 7960 Administrator Guide |
|
|
|
|
| ||
|
|
|
| |
|
|
|
