[asterisk-users] VPMADT032 Failed! Unable to ping the DSP (2)!

[Shaun Ruffell]

On 07/26/2010 05:48 PM, Warren Selby wrote:
> Running Asterisk 1.6.2.9, DAHDI 2.3.0.1, CentOS 5.5 (update to date as
> of a week ago), I've installed a Digium AEX800P with 2 X400M FXO Modules
> and 1 VPMADT032 Module, hooked up to 5 analog lines.  I get the error
> message referenced in the subject in my dmesg output everytime I load /
> reload DAHDI using the command "system dahdi start/restart".  When I
> make an outbound call over these analog lines, I'm told in the CLI "
> WARNING[22601]: chan_dahdi.c:2685 dahdi_enable_ec: Unable to enable echo
> cancellation on channel 5 (No such device)", and there is noticeable
> echo on the line, hearable by the caller inside the office, not by the
> recipient outside the office.  When I make an inbound call, I get the
> same message, with echo still heard by the person inside the office, and
> not outside.  I've run fxotune -i 4 -e 5 also, and still receive the
> same output.
> 

You should contact Digium technical support for assistance with this.
They can walk you through the troubleshooting process.

The most immediate thing you can do to limp along is enable sw echocan
by editing /etc/modprobe.d/dahdi and add "options wctdm24xxp
vpmsupport=0" and ensure you have software echocan configured in
/etc/dahdi/system.conf, which dahdi_genconf will do by default.

Cheers,
Shaun

-- 
Shaun Ruffell
Digium, Inc. | Linux Kernel Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at: www.digium.com & www.asterisk.org