[Asterisk-Users] Re: X100P / Echo / ZTMONITOR CAN2,3, etc.

[dkwok]

asterisk-users-request at lists.digium.com wrote:
> The strange thing here is that asterisk is not removing the echo.  I did 
> notice that the 0.7.1 tar did not do the echo cancel very well and Mark 
> suggested that I go back to the CVS, which did wonders. You might also 
> verify that echo cancellation is actually turned on. Enter "zap show 
> channel x" at the CLI, where x is one of your defined zap channels.  If 
> it's enabled, somewhere in the output you should see "Echo Cancellation: 
> xx taps, Currently On/Off". The On/Off will change from Off to On when a 
> call is bridged.  If it is not enabled, check the definitions in zapata 
> and in your make file.
> 

I have checked my zapata.conf file and fiddled with the settings so far 
I cannot get echocancel to work. Although I don't have echo problem now.

[channels]
;
language=en
context=incoming
amaflags=default
cancallforward = yes
callwaiting = no
busydetect = no
callprogress = no
musiconhold = default
rxgain=0.0
txgain=0.0
immediate=no
echocancel = yes
echocancelwhenbridged = yes
echotraining = yes
usecallerid = yes
threewaycalling = yes
callwaitingcallerid = yes
callerid = asreceived
signalling = fxs_ks
callreturn = yes
channel = 1

At the console, the output for show channel is :
Channel: 1
File Descriptor: 19
Span: 1
Extension:
Context: incoming
Caller ID string:
Destroy: 0
Signalling Type: FXS Kewlstart
Owner: <None>
Real: <None>
Callwait: <None>
Threeway: <None>
Confno: -1
Propagated Conference: -1
Real in conference: 0
DSP: no
Relax DTMF: no
Dialing/CallwaitCAS: 0/0
Default law: ulaw
Fax Handled: no
Pulse phone: no
Echo Cancellation: 128 taps, currently OFF
Actual Confinfo: Num/0, Mode/0x0000
Actual Confmute: No

I have a look at the Makefile in zapata directory and do not see 
anything needs to be tweak.

David Kwok