[asterisk-users] Newbie IVR: How to read() before playback()is finished?

[Eric Wieling]

Lee, John (Sydney) wrote:
>> the relaxdmtf (or similar) option in zaptel can make this work a bit
>> better...but it's a try at your own risk option!
>>
>> PaulH
> 
> Thanks Paul.
> 
> I have further findings into the problem.
> 
> While the message is being played, if I press a key during the "pause"
> or "break" between words, then the key will be able to be read properly.
> 
> So, it seems like the traffic on the pots network is pretty much
> half-duplex.  
> On the LAN however, it is full-duplex and that is why I don't have such
> problem with reading key pressed.

Play with the rxgain on your PSTN card.  Increase it by 2 until it 
works.  If it doesn't work, try decreasing by 2 until it works.  If it 
still doesn't work then start playing with txgain (I've seen txgain 
changes fix DTMF issues, don't know why)

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