asterisk users - Sep 2005 - Echo Cancellation not working in Zapata.conf

I have echocancel=yes in zapata.conf but when I do a zap show channel 1,
I notice echo cancellation is turned off.

 

I followed the article that talks about the order in which the
statements need to be in zapata.conf to get echo canceling to work:

 

 

http://lists.digium.com/pipermail/asterisk-users/2005-June/110615.html

 

But it is still not working.  Does anyone know how to get echo
cancellation to work?

 

We have Asterisk 1.0.7 and Zaptel 1.0.9 with 2 PRIs using a TE410P
board.

 

Here is the output from the CLI:

 

zap show channel 1

Channel: 1*CLI>

File Descriptor: 25

Span: 1

Extension:

Dialing: no

Context: aheeva

Caller ID string:

Destroy: 0

InAlarm: 0

Signalling Type: PRI Signalling

Owner: <None>

Real: <None>LI>

Callwait: <None>

Threeway: <None>

Confno: -1

Propagated Conference: -1

Real in conference: 0

DSP: no

Relax DTMF: yes

Dialing/CallwaitCAS: 0/0

Default law: ulaw

Fax Handled: no

Pulse phone: no   

Echo Cancellation: 128 taps, currently OFF

PRI Flags:

PRI Logical Span: Implicit

Actual Hookstate: Onhook

 

 

 

Here is my Zapata.conf:

 

; Zapata telephony interface

;

; Configuration file

 

[channels]

;

usecallerid=yes

hidecallerid=no

callwaiting=no

restrictcid=no

usecallingpres=yes

callwaitingcallerid=yes

threewaycalling=no

transfer=no

cancallforward=yes

callreturn=yes

callerid=asreceived

;

relaxdtmf=yes

;

rxgain=0.0

txgain=0.0    

immediate=no

;

; Configure jitter buffers in zapata (each one is 20ms, default is 4)

;

jitterbuffers=4

;

 

context=aheeva

switchtype=national

signalling=pri_cpe

pridialplan=unknown   ; needed to pass proper # digits to PRI

echocancel=yes

echotraining=yes

echocancelwhenbridged=yes

group = 1

channel => 1-23

;channel => 25-48   

 

 

 

 

Thanks,

 

Alberto


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Nevermind.  It turns out that if you are not on an active call on the
channel, the "zap show channel x" shows OFF by default.  After placing
a
call and checking the channel, it showed "Echo Cancellation: 128 taps,
currently on" as it should.  So our setup is correct after all.

 

 

Alberto

 

________________________________

From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Alberto
Risco
Sent: Friday, September 30, 2005 9:58 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Echo Cancellation not working in Zapata.conf

 

I have echocancel=yes in zapata.conf but when I do a zap show channel 1,
I notice echo cancellation is turned off.

 

I followed the article that talks about the order in which the
statements need to be in zapata.conf to get echo canceling to work:

 

 

http://lists.digium.com/pipermail/asterisk-users/2005-June/110615.html

 

But it is still not working.  Does anyone know how to get echo
cancellation to work?

 

We have Asterisk 1.0.7 and Zaptel 1.0.9 with 2 PRIs using a TE410P
board.

 

Here is the output from the CLI:

 

zap show channel 1

Channel: 1*CLI>

File Descriptor: 25

Span: 1

Extension:

Dialing: no

Context: aheeva

Caller ID string:

Destroy: 0

InAlarm: 0

Signalling Type: PRI Signalling

Owner: <None>

Real: <None>LI>

Callwait: <None>

Threeway: <None>

Confno: -1

Propagated Conference: -1

Real in conference: 0

DSP: no

Relax DTMF: yes

Dialing/CallwaitCAS: 0/0

Default law: ulaw

Fax Handled: no

Pulse phone: no   

Echo Cancellation: 128 taps, currently OFF

PRI Flags:

PRI Logical Span: Implicit

Actual Hookstate: Onhook

 

 

 

Here is my Zapata.conf:

 

; Zapata telephony interface

;

; Configuration file

 

[channels]

;

usecallerid=yes

hidecallerid=no

callwaiting=no

restrictcid=no

usecallingpres=yes

callwaitingcallerid=yes

threewaycalling=no

transfer=no

cancallforward=yes

callreturn=yes

callerid=asreceived

;

relaxdtmf=yes

;

rxgain=0.0

txgain=0.0    

immediate=no

;

; Configure jitter buffers in zapata (each one is 20ms, default is 4)

;

jitterbuffers=4

;

 

context=aheeva

switchtype=national

signalling=pri_cpe

pridialplan=unknown   ; needed to pass proper # digits to PRI

echocancel=yes

echotraining=yes

echocancelwhenbridged=yes

group = 1

channel => 1-23

;channel => 25-48   

 

 

 

 

Thanks,

 

Alberto

The contents of this email message and any attachments are confidential
and are intended solely for addressee. The information may also be
legally privileged. This transmission is sent in trust, for the sole
purpose of delivery to the intended recipient. If you have received this
transmission in error, any use, reproduction or dissemination of this
transmission is strictly prohibited. If you are not the intended
recipient, please immediately notify the sender by reply email and
delete this message and its attachments, if any.

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On Friday 30 September 2005 09:57, Alberto Risco wrote:
> I have echocancel=yes in zapata.conf but when I do a zap show channel 1,
> I notice echo cancellation is turned off.
If the channel is not in use, echo cancellation will be off.

Your show zap channel output shows it's on-hook, so the DSP and echo
canceller
will be off.  

Are you actually having issues or are you falling into the trap of 
overanalyzing everything?

-A.