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Dialogic
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Global Call IP Technology Guide — November 2007 97
Dialogic Corporation
IP Call Scenarios
3.4 T.38 Fax Server Call Scenarios
Dialogic
®
Global Call API supports T.38 fax server as described in Section 4.26, “T.38 Fax
Server”, on page 320. The following scenarios demonstrate the T.38 fax server capabilities
provided when using IP technology (both H.323 and SIP):
• Sending T.38 Fax in an Established Audio Session
• Receiving T.38 Fax in an Established Audio Session
• Sending T.38 Fax Without an Established Audio Session
• Receiving T.38 Fax Without an Established Audio Session
• Sending a Request to Switch From T.38 Fax to Audio
• Receiving a Request to Switch From T.38 Fax to Audio
• Terminating a Call After a T.38 Fax Session
• Recovering from a Session Switching Failure
Note: In these scenarios, the application must include T.38 Fax capability either when using
gc_MakeCall( ) for an outbound call or when using gc_CallAck( ), gc_AcceptCall( ), or
gc_AnswerCall( ) for an inbound call.