C-59

SIP IP Phone to SIP IP Phone: Call Return
Figure C-23. SIP IP Phone to SIP IP Phone: Call Return — Diagram 3
SIP Phone UA Marshal Redirect Server Feature Server:
Call Return SIP Phone
32. INVITE
33. 302
34. ACK
35. INVITE
36. 100
37. 302
38. ACK
39. 302
40. ACK
41. INVITE
42. 100
43. INVITE
44. 302
45. ACK
46. INVITE
47. 100