1. TxReqRel        INVITE / 102 INVITE
2. Rx              SIP/2.0 / 102 INVITE /100 Trying
3. CancelDestroy
4. Rx              SIP/2.0 / 102 INVITE /401 Unauthorized
5. TxReq           ACK / 102 ACK
6. TxReqRel        INVITE / 103 INVITE
7. Rx              SIP/2.0 / 103 INVITE /100 Trying
8. CancelDestroy
9. Rx              SIP/2.0 / 103 INVITE /183 Session Progress
10. CancelDestroy
11. Rx              SIP/2.0 / 103 INVITE /183 Session Progress
12. CancelDestroy
13. Unhold          SIP/2.0
14. Rx              SIP/2.0 / 103 INVITE /183 Session Progress
15. CancelDestroy
16. Unhold          SIP/2.0
17. Rx              SIP/2.0 / 103 INVITE /180 Ringing
18. CancelDestroy
19. Unhold          SIP/2.0
20. Rx              SIP/2.0 / 103 INVITE /200 OK
21. CancelDestroy
22. Unhold          SIP/2.0
23. TxReq           ACK / 103 ACK
24. SchedDestroy    32000 ms
25. TxReqRel        BYE / 104 BYE
26. Rx              SIP/2.0 / 104 BYE /403 Forbidden