[asterisk-users] Intercepting DTMF to initiate Voice Drop

[Don Pobanz]

From: Raj Jain - Friday, January 25, 2008 10:07 AM
> I'm trying to implement a Voice Drop service within Asterisk
> dial-plan. The service is supposed to work as following:
> 
> 1. A initiates a call to B
> 2. The call is answered by B's answering machine
> 3. A hears the answering machine's greeting and the recording beep
> 4. A speaks a few words into the recording to personalize the message
> 5. A presses some DTMF keys (say, '##') to initiate Voice Drop
> 6. PBX intercepts DTMF and starts playing a prerecorded 
> announcement to B
> 7. A is released from the call as soon as the Voice Drop is initiated
> 8. PBX releases the call to B at the end of the announcement
> 
> Any thoughts, ideas?

After talking with B, A could transfer the call to an extension such as
123 with a dial plan something like: 

Exten => 123,1,Playback(file)
Exten => 123,n,Playback(file)
Exten => 123,n,hangup

A will need to be able to transfer outgoing calls ('T' option).

Don Pobanz