asterisk users - Jan 2006 - Disabling zap echo cancellor from dialplan

Anybody knows if it's possible to disable zap echo cancellor from 
dialplan only for certain outbound calls ??

I share the same phone lines for voice calls and faxes. Iaxmodem works 
fine for me only turning off  the echo cancellor, but I need it for 
voice calls.
Any ideas ?

maxx

Massimo De Nadal wrote:
> Anybody knows if it's possible to disable zap echo cancellor from 
> dialplan only for certain outbound calls ??
> 
> I share the same phone lines for voice calls and faxes. Iaxmodem works 
> fine for me only turning off  the echo cancellor, but I need it for 
> voice calls.
There is not currently any way to do that, but the echo canceller should 
turn itself off when it hears the magic tone that FAX machines generate 
for that very purpose.

On Thursday 19 January 2006 12:52, Massimo De Nadal
wrote:
> I share the same phone lines for voice calls and faxes. Iaxmodem works
> fine for me only turning off  the echo cancellor, but I need it for
> voice calls.
> Any ideas ?
IAXModem (and the device you're connecting to) should be sending out the
echo
canceller disable tone (standard tone, I forget the specific standard body # 
it is referenced in) -- I have my fax machines, security system and stamp 
machine work all the time this way, and you can see in the dmesg output that 
the echo canceller for channel 'x' is disabled due to the tone.

Make sure you didn't disable the tone detection in zconfig.h.

-A.

On Thursday, January 19, 2006 6:53 PM Massimo De Nadal wrote: 
> Anybody knows if it's possible to disable zap echo cancellor from
> dialplan only for certain outbound calls ?? 
> 
> I share the same phone lines for voice calls and faxes. Iaxmodem
> works fine for me only turning off  the echo cancellor, but I need it
> for voice calls. Any ideas ? 
If you are using bristuff add the m option like this:

Dial(Zap/g1m/numbertodial)

This will turn off the modulation (rxgain/txgain) and should (!) turn of
the echo cancellation but I am not sure about this.

Regards,
  JP

Koopmann, Jan-Peter ha scritto:
> On Thursday, January 19, 2006 6:53 PM Massimo De Nadal wrote: 
>
> If you are using bristuff add the m option like this:
>
> Dial(Zap/g1m/numbertodial)
>
> This will turn off the modulation (rxgain/txgain) and should (!) turn of
> the echo cancellation but I am not sure about this.
>
> Regards,
>   JP
>   
Thank you very much.
Option m solved my problems.

maxx