[Asterisk-Users] X100P card issues - noise, volume, etc

[Thomas Gallaway]

San Singhania wrote:

> Hello,
>  
> I have just managed to get my 1st * server up and running and have a 
> lot of issues with theX100P analog card. Would really appreciate 
> anyone trying
> to help me on the following :
>  
> 1. The receive and transmit is too soft. So i increased the txgain and 
> rxgain. The volume is fine after this, but there is a lot of 'wind' 
> noise on the line.
> I have my echo cancellation on, aggregive suppression on but still no 
> use. However, the moment I set the txgain and rxgain back to 0, everything
> works fine but both parties compain that they cannot hear each other. 
> Any solution for this?
>  
> Also, if I use an ISDN interface, will it solve my problems? I 
> understand that since it is digital, there are no longer issues with 
> hangup detection,
> noise, echo, etc. Is that true?
>  
> Also, has anyone had any experience with conferening (i.e bridging) 2 
> FXO cards together?
>  
> Thanks
>  
> San
>  

I think the problem is when you turn on rx/txgain the echo cancel will 
stop working? Check your /var/log/messages file that is how I found out 
about it.

Mar 26 12:26:34 voip kernel: zaptel Disabled echo canceller because of 
tone (rx) on channel 1