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

[Kevin P. Fleming]

Greg Lim wrote:

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

You can build exactly this sort of thing using app_externalivr, and the 
protocol for talking to it is documented in the doc directory.