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IP Phone User Manual

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86 Dialogic
®
Global Call IP Technology Guide — November 2007
Dialogic Corporation
IP Call Scenarios
3.3.5 Successful SIP Attended Call Transfer Scenarios
This section describes the basic scenario for successful SIP call transfer and the scenarios for
recovery from two conditions that can block transfer completion. The scenarios include:
• Successful SIP Attended Call Transfer
• Attended Transfer when REFER is Not Globally Supported
• Attended Transfer When Contact URI is Not Globally Routable
The scenarios all illustrate the optional GCEV_INVOKE_XFER_ACCEPTED event, which is
disabled by default. The Transferor application can enable and disable this event at any time after
the line device is opened using the gc_SetConfigData( ) function.