[Asterisk-Dev] AST_FLAG_DEFER_DTMF (would like dialogic-r4 like semantics)

[Greg Lim]

Could someone enlighten me on the use of this flag? It appears to be
only used in channel.c, and only for ast_read()...
The direction I'd like to go in is to create an AGI module that will
allow me to make use of Dialogic-R4-like semantics.
For example, there is no easy way in AGI currently to do this:

0. clear dtmf buffer
1. play (menu1, interruptible)
2. if (specialcustomer) play (menu2, interruptible)
3. play (menu3, interruptible)
4. collect dtmf digits
etc.

We have a LOT of existing code on a Win32 ivr using this convention, and
there doesn't appear to be a simple way of getting the interruptible
feature of playing prompts to work with multiple different prompt files.

Getting back to the subject:
	Could I make use of that flag to get the digit collection
behavior I want? The Dialogic-R4 API allows a dx_playvox to
	both be interrupted by a user's keypress *during* and *before*
the dx_playvox() call is even made.

Thanks for reading,
-Greg



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