Dialogic Dialogic Global Call IP IP Phone User Manual


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Dialogic
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Global Call IP Technology Guide – November 2007 11
Dialogic Corporation
Contents
Figures
1 Typical H.323 Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2 H.323 Protocol Stack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3 Basic H.323 Network with a Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4 Basic SIP Call Scenario. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5 Dialogic® Global Call API Over IP Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6 Dialogic® Global Call API Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7 Configurations for Binding IPT Boards to NIC IP Addresses. . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8 Basic Call Setup When Using H.323 or SIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
9 Basic Call Teardown When Using H.323 or SIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10 H.323 Early Media, FastStart Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
11 H.323 Early Media, SlowStart Mode with Early H.245 Enabled . . . . . . . . . . . . . . . . . . . . . . . . 55
12 SIP Early Media, Calling UA Offers SDP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
13 SIP Early Media, Calling UA Answers SDP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
14 Successful H.450.2 Blind Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
15 H.450.2 Blind Call Transfer Failure - Party B Rejects Call Transfer . . . . . . . . . . . . . . . . . . . . . 61
16 H.450.2 Blind Call Transfer Failure - No Response from Party B . . . . . . . . . . . . . . . . . . . . . . . 62
17 H.450.2 Blind Call Transfer Failure - No Response from Party C . . . . . . . . . . . . . . . . . . . . . . . 63
18 H.450.2 Blind Call Transfer Failure - Party B Clears Primary Call Before Transfer is Completed.
64
19 H.450.2 Blind Call Transfer Failure - Party C is Busy When Transfer Attempted . . . . . . . . . . . 65
20 Successful H.450.2 Supervised Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
21 H.450.2 Supervised Call Transfer Failure - Party C Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . 70
22 H.450.2 Supervised Call Transfer Failure - Party C Rejects the Transfer Request. . . . . . . . . . 71
23 H.450.2 Supervised Call Transfer Failure - Party B Rejects the Transfer Request. . . . . . . . . . 72
24 H.450.2 Supervised Call Transfer Failure - Party B Timeout. . . . . . . . . . . . . . . . . . . . . . . . . . . 73
25 Successful SIP Unattended Call Transfer, Party A Notified with Connection . . . . . . . . . . . . . . 79
26 Successful SIP Unattended Call Transfer, Party A Notified with Ringing . . . . . . . . . . . . . . . . . 80
27 Successful SIP Unattended Call Transfer, Party B Terminates REFER Subscription
prior to Notification of Transferred Call Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
28 Successful SIP Unattended Call Transfer, Party A Clears Primary Call prior to Transfer
Completion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
29 Successful SIP Unattended Call Transfer, Party B Clears Primary Call prior to Transfer
Completion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
30 Successful SIP Attended Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
31 SIP Attended Call Transfer, Recovery from REFER Unsupported . . . . . . . . . . . . . . . . . . . . . . 88
32 SIP Attended Call Transfer, Recovery from URI Not Routable . . . . . . . . . . . . . . . . . . . . . . . . . 89
33 SIP Call Transfer Failure - Party B Rejects Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
34 SIP Call Transfer Failure - No Response from Party B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
35 SIP Call Transfer Failure - No Initial NOTIFY After REFER is Accepted. . . . . . . . . . . . . . . . . . 92
36 SIP Call Transfer Failure - REFER Subscription Expires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
37 SIP Call Transfer Failure - No Response from Party C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
38 SIP Call Transfer Failure - Party B Drops Transferred Call Early . . . . . . . . . . . . . . . . . . . . . . . 95
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