[Asterisk-Users] Echo on Zaptel FXO :(

[Ian Chilton]

Hi All,

I've got an MD3200 modem which is working as a Zaptel FXO interface for
Asterisk (X100P clone I believe). It seems to work, but on incoming or
outgoing calls I can hear the other party ok but when I speak, I hear
my voice echo back at me (quite quietly but it's distracting!) on
everything I say. The other party doesn't seem to hear the echo - they
just say I sound a bit quiet.

Someone suggested I play with the rxgain and txgain but this didn't seem
to help. Is there anything I can do? - or is it a problem with my fxo
card or zaptel cards in general?

I'm running Asterisk 1.0.2-2 on Debain Linux (with zaptel 1.0.0-2) and
i've got the modem connected to an NTL phone line in the UK. Here is my
config's:

/etc/zaptel.conf:

fxsls=1
loadzone=uk
defaultzone=uk


/etc/zapata.conf:

[channels]
  context=incoming_pstn
  signalling=fxs_ls
  usecallerid=yes
  echocancel=yes
  echocancelwhenbridged=yes
  echotraining=yes
  rxgain=0.0
  txgain=0.0
  channel => 1


ztcfg -vvv:

Zaptel Configuration
======================

Channel map:

Channel 01: FXS Loopstart (Default) (Slaves: 01)

1 channels configured.


Any advice would be greatly apprciated!


Thanks!

--ian