C-162

Ad Hoc Conference Call Between User Agents
Figure C-51. User Agent to User Agent to User Agent: Ad Hoc Conference Call: Disconnect Last Party — Diagram 3
VOCAL User Agent UA Marshal Redirect Server VOCAL User Agent VOCAL User Agent
32. 180
33. 180
34. 200
35. 200
36. ACK
37. ACK
38. INVITE
39. 100
40. INVITE
41. 200
42. 200
43. ACK
44. ACK
45. TRANSFER
46. 100
47. TRANSFER