Dialogic Global Call IP Benutzerhandbuch

Dialogic

®

Global Call IP Technology Guide – November 2007

11

Dialogic Corporation

Contents

Figures

Typical H.323 Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

H.323 Protocol Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Basic H.323 Network with a Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Basic SIP Call Scenario. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Dialogic® Global Call API Over IP Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Dialogic® Global Call API Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Configurations for Binding IPT Boards to NIC IP Addresses. . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Basic Call Setup When Using H.323 or SIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Basic Call Teardown When Using H.323 or SIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

H.323 Early Media, FastStart Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

H.323 Early Media, SlowStart Mode with Early H.245 Enabled . . . . . . . . . . . . . . . . . . . . . . . . 55

SIP Early Media, Calling UA Offers SDP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

SIP Early Media, Calling UA Answers SDP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Successful H.450.2 Blind Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

H.450.2 Blind Call Transfer Failure - Party B Rejects Call Transfer . . . . . . . . . . . . . . . . . . . . . 61

H.450.2 Blind Call Transfer Failure - No Response from Party B . . . . . . . . . . . . . . . . . . . . . . . 62

H.450.2 Blind Call Transfer Failure - No Response from Party C . . . . . . . . . . . . . . . . . . . . . . . 63

H.450.2 Blind Call Transfer Failure - Party B Clears Primary Call Before Transfer is Completed.
64

H.450.2 Blind Call Transfer Failure - Party C is Busy When Transfer Attempted . . . . . . . . . . . 65

Successful H.450.2 Supervised Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

H.450.2 Supervised Call Transfer Failure - Party C Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . 70

H.450.2 Supervised Call Transfer Failure - Party C Rejects the Transfer Request. . . . . . . . . . 71

H.450.2 Supervised Call Transfer Failure - Party B Rejects the Transfer Request. . . . . . . . . . 72

H.450.2 Supervised Call Transfer Failure - Party B Timeout. . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Successful SIP Unattended Call Transfer, Party A Notified with Connection . . . . . . . . . . . . . . 79

Successful SIP Unattended Call Transfer, Party A Notified with Ringing . . . . . . . . . . . . . . . . . 80

Successful SIP Unattended Call Transfer, Party B Terminates REFER Subscription
prior to Notification of Transferred Call Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Successful SIP Unattended Call Transfer, Party A Clears Primary Call prior to Transfer
Completion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Successful SIP Unattended Call Transfer, Party B Clears Primary Call prior to Transfer
Completion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Successful SIP Attended Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

SIP Attended Call Transfer, Recovery from REFER Unsupported . . . . . . . . . . . . . . . . . . . . . . 88

SIP Attended Call Transfer, Recovery from URI Not Routable . . . . . . . . . . . . . . . . . . . . . . . . . 89

SIP Call Transfer Failure - Party B Rejects Call Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

SIP Call Transfer Failure - No Response from Party B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

SIP Call Transfer Failure - No Initial NOTIFY After REFER is Accepted. . . . . . . . . . . . . . . . . . 92

SIP Call Transfer Failure - REFER Subscription Expires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

SIP Call Transfer Failure - No Response from Party C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

SIP Call Transfer Failure - Party B Drops Transferred Call Early . . . . . . . . . . . . . . . . . . . . . . . 95