[Asterisk-Users] Echo in CAPI channels

[Derek Conniffe]

I also get echo also but whats interesting is that I only get an echo if 
the person at the far end (via. the telephone company) is using an 
analogue phone line.  If they are on ISDN or a cell phone there is no echo.

I'm only using basic ISDN (not primary rate) connections with chan_capi 
and AVM Fritz PCI cards.  I'd love to hear how to fix this.

Derek

igil at itranser.com wrote:

>Hello all,
>
>Recently we change our traditional pbx with an Asterisk pbx,
>All works fine, but almost all incoming calls that we recibe, we ear our
>own voice like an echo in our phone. The person who we are talking ear us
>fine, but we ear echo and sometimes interferences on the phone.
>We are using diferent hardware phones but the echo persists.
>
>Thanks in advice.
>
>Ismael
>
>;
>; CAPI config
>;
>;
>[general]
>nationalprefix=0
>internationalprefix=00
>rxgain=0.8
>txgain=0.8
>
>[interfaces]
>
>;#########config de la primera interface CAPI##########333
>msn=XXXXXXXXXXX
>incomingmsn=*
>controller=1
>softdtmf=1
>accountcode=
>context=salientes-rdsi
>echosquelch=1
>echocancel=yes
>echotail=64
>;callgroup=1
>;deflect=12345678
>devices=4
>
>;###############segunda####################################
>
>msn=XXXXXXXXXXX
>incomingmsn=*
>controller=2
>softdtmf=1
>accountcode=
>context=salientes-rdsi
>echosquelch=1
>echocancel=yes
>echotail=64
>;callgroup=1
>;deflect=12345678
>devices=4
>
>;################tercera####################################
>
>msn=XXXXXXXXXXX
>incomingmsn=*
>controller=3
>softdtmf=1
>accountcode=
>context=salientes-rdsi
>echosquelch=1
>echocancel=yes
>echotail=64
>;callgroup=1
>;deflect=12345678
>devices=4
>
>;################cuarta#####################################
>
>msn=XXXXXXXXXX
>incomingmsn=*
>controller=4
>softdtmf=1
>accountcode=
>context=salientes-rdsi
>echosquelch=1
>echocancel=yes
>echotail=64
>;callgroup=1
>;deflect=12345678
>devices=4
>
>
>
>;msn=50
>;incomingmsn=*
>;controller=1
>;softdtmf=1
>;accountcode=
>;context=demo
>;echosquelch=1
>;echocancel=yes
>;echotail=64
>;callgroup=1
>;deflect=12345678
>;devices=2
>
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-- 


Derek Conniffe
Rivertower Ltd
DDI: (Local Ireland) 01 201 0146 (International) +353 1 201 0146
Mobile: (Local Ireland) 086 856 3823 (International) +353 86 856 3823
Main Line: (Local Ireland) 1890 45 70 74 (International) +353 1 201 0180
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Email: derek at rivertower.ie
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