[Asterisk-Users] TDM2400P with echo canceller not working

[Giorgio Incantalupo]

Hello Francois,
this is my zaptel.conf:
# 12 red modules (FXO) on tdm2400
fxsks=1-12
fkoks=13-16
defaultzone=it
loadzone=it
This is my zapata.conf:
[channels]
context = outbound_zap
canpark = yes
echocancel = 128
echocancelwhenbridged = yes
faxdetect = incoming
language = us
musiconhold = default
signalling = fxs_ks
callerid = "FGA" <0293500178>
channel => 1

... the same for all FXO channels, haven't specified FXS channels until 
FXO ones work correctly

I haven't seen any led on my echo cancellation module...sorry!

Messages from /var/log/messages:
May 29 09:41:38 pbxtest kernel: VPM: Chip 0: ver 33
May 29 09:41:38 pbxtest kernel: VPM: U-law mode
May 29 09:41:38 pbxtest kernel: VPM: Chip 1: ver 33
May 29 09:41:38 pbxtest kernel: VPM: Chip 2: ver 33
May 29 09:41:38 pbxtest kernel: VPM: Chip 3: ver 33
May 29 09:41:38 pbxtest kernel: VPM: DTMF threshold set to 1250
May 29 09:41:38 pbxtest kernel: VPM: Present and operational

I think it is all right...

Another question for you:
which kind of test or instrument do you use to analyze echo on analog 
lines? I've heard about ztmonitor but I do not know exaclty what it does 
and infos on internet are not many. Or do you use something else? If I 
hade some sort of instrument for measuring echo my work on it could be 
easier instead of changing randomly rxgain, txgain and all the other 
parameters.

TIA


Giorgio Incantalupo

f6hqz-m at hamwlan.net wrote:
> Hello Giorgio,
>
> I am a TDM2400 happy user.  :-)
>
> Could you show your zaptel.conf zapata.conf config files ?
> Think to tell us how many modules you have and where they are plugged on the
> TDM2400P.
> Are the leds on the echocan modules running as a LasVegas casino (scrolling
> in a circular pattern) ?
> If you have an echocan module aboard and well running you must see it at
> Linux boot (syslog):
> The 4 echocan chipsets are sequencialy checked and return an hexadecimal
> code different of "FF" if ok, just before to tell "VPM:  Present and
> operational (Rev X)", if I remember well.
>
> If the VPM is ok, zaptel echocan software is automaticaly disabled for this
> zap channels in Asterisk server.
> The echotraining is not applicable for this card and generate an error
> message on the Asterisk console if enabled in your zapata.conf, but don't
> care, this doesn't affect Asterisk and the call itself.
>
> The settings must be done as usual with TDM400 cards.
>
> I hope this can help a little.
>
> Best Regards,
> Francois BERGERET,
> France.
>
>
> -----Message d'origine-----
> De : asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] De la part de Giorgio
> Incantalupo
> Envoyé : lundi 29 mai 2006 09:33
> À : asterisk-users at lists.digium.com
> Objet : [Asterisk-Users] TDM2400P with echo canceller not working
>
>
> Hi,
> I have  a box with Debian Sarge, Asterisk 1.2.1 (and zaptel 1.2.1) and a 
> TDM2400P with echo canceller. I installed the card but no echo 
> cancellation is being made...seems like the echo canceller module does 
> not work, infact the software cancellation is working.
>
> My zapata.conf has echocancel = 128 and echocancelwhenbridged = yes but 
> no echotraining parameter which gives a warning.
>
> I found no info about how to use this card and how to correctly set 
> zapata.conf, which zaptel version to use, etc...
>
> Does anybody knows how to use this card?
>
> TIA
>
> Giorgio Incantalupo _______________________________________________
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-- 
____________________________________________________________________

GIORGIO INCANTALUPO
Tel. +39 02 9350 4780 (104)

FG&A Software
20017 Rho - Via Puccini, 8

E-Mail :
gincantalupo at fgasoftware.com
Internet:
http://www.fgasoftware.com