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| Ad |
VOCAL User Agent | UA Marshal | Redirect Server | VOCAL User Agent | VOCAL User Agent | Hoc | ||
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16. | INVITE |
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| Conference |
17. | 100 |
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| 18. | INVITE |
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| 19. | 200 |
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| Call |
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20. | 200 |
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| Between |
21. | ACK |
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| 22. | ACK |
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| User |
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23. | INVITE |
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| Agents |
24. | 100 |
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| 25. | INVITE |
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| 26. | 302 |
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| 27. | ACK |
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| 28. | INVITE |
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| 29. | 302 |
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| 30. | ACK |
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| 31. | INVITE |
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