[Asterisk-Dev] app_rpt and iaxcomm ptt

[Andreas Bayer]

Am Donnerstag, 25. August 2005 20:08 schrieb hwstar at rodgers.sdcoxmail.com:
> Andreas,
>
> What you are asking for is VOX (voice activated TX). This is not something
> we wish to support in app_rpt. Detecting audio frames to key and unkey
> transmitters is not reliable, especially when dealing with stuck
> transmitters, chopped words and carrier unkey delays.
>
There is a difference between no audio frames (or cng frames) and audio frames 
with noise but no voice.

It is similar to getting a carrier signal without modulation or getting no 
carrier.
 

I am not asking for vox, because i know it is a bad idea.

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Am Donnerstag, 25. August 2005 19:52 schrieb Steve Kann:

>
> The latest iaxclient, and, by extension, iaxcomm, also send a CNG frame
> when they stop sending audio.  So, app_rpt can easily keep track of the
> PTT state:
>
> Start in state OFF.
>
> State OFF -- receive a voice frame -> State ON
> State ON -- receive a CNG frame -> State OFF