C-93

SIP IP Phone to SIP IP Phone: Forward to Voice Mail
Figure C-31. SIP IP Phone to SIP IP Phone: Forward to Voice Mail — Diagram 2

SIP Phone UA Marshal Redirect Server Feature Server: FNA SIP Phone

16. 180
17. 180
18. 180
19. CANCEL
20. 200
21. CANCEL
22. 200
23. 180
24. 180
25. 200
26. 200
27. ACK
28. ACK
29. BYE
30. BYE
31. 200