[VoIP] New Question

[Jonathan Kay]

Paul Wills wrote:
> Here's a question:
>
> One of my incoming CNET lines goes to an Automatic Electric code call.  The "confirmation" that a page is taking place consists of an audible pattern of buzzes being fed back to the caller.  Unfortunately, the Asterisk seems to clip out any sudden tone or sound (It also happens when one calls my Northeast Electronics milliwatt source).  This causes the caller to only hear a very short burst of tone.  
>
> Is this the echo cancelling at work?
>
> Is there a way to remove the tone break without screwing up the echo cancelling too much?
>   
Hi Paul,
You could try *echotraining=no*
in your zapata.conf, just against this relevant zap channel entry.
The Echo training, mutes the channel, while it sends a tone pulse to 
train the echo canceller.
The echo canceller should still train itself, but just take longer.


Jon