Dialogic M7324 - Manual (Page 63)

4. PBX Systems
2. Call the dx_dial( ) function. The dial string is
<ESCF><extension><ESCF> (optional pause character may be used).
3. Go on-hook using the dx_sethook( ) function again.
NOTE: <ESCF> means the Escape character followed by F.
4.2.6. Transferring a Call
The Dialogic ® PBX Integration Board can transfer calls using the dx_dial( )
function. By using the dx_dial( ) function and the appropriate dial string, the
PBX Integration Board can transfer a call to an extension connected to the
switch. Refer to the Dialogic
® PBX Integration Software Reference for more
information about dialing programmable keys.
The Dialogic ® PBX Integration Board can perform both supervised and blind
transfers (refer to Sections 2.1. Supervised Call Transfer and 2.2. Blind Call
Transfer ). If a blind transfer is performed, the PBX controls where the call is
routed if the called extension is busy or does not answer. If a supervised
transfer is performed, your application can implement call progress analysis
and called/calling number ID to intelligently control where the call is routed
(by completing or aborting the transfer) and what type of message is played if
the called extension is busy or does not answer. Because of this capability,
supervised transfer is a comparatively preferred call transfer method.
Initiating the Transfer
Once in a connected call, you can initiate a transfer with dx_dial(&,<ext>),
where & acts as a key press of the transfer key and <ext> is the PBX
extension to which you are transferring the call.
Completing the Transfer
To complete a call (supervised or blind), the application must go on-hook at
the transferring party.
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