Nortel Networks Confidential |
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| Appendix A: Basic call flows 105 | ||||
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Figure 5 Failed call transfer call flow |
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| SIP |
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| Application |
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Client A |
| Module | Client B | Client C | |||||
Call established between A and B | |||||||||
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| 1. Invite (hold) |
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2.Invite (hold)
3.200 OK
4.200 OK
5.Ack
6. Ack
7. Refer (to C)
8. Refer (to C)
9. 202 (accepted)
10. 202 (accepted)
11.Invite (to C)
12.Invite (to C)
13.486 Busy Here
14.486 Busy Here
15.Ack
16.Ack
17.Notify (486 Busy Here)
18.Notify (486 Busy Here)
19.200 OK
20. 200 OK
21. Invite (Unhold) or Bye
22.Invite (Unhold)
23.200 OK
24.200 OK
25.Ack
26. Ack
Copyright © 2003, Nortel Networks | MCP SIP Application Module Basics |
