[asterisk-users] DAHDI 2.4.0 produces HDLC errors with echo canceler

[Shaun Ruffell]

On 11/27/2010 11:03 AM, James Lamanna wrote:
> Hi,
> After upgrading to DAHDI 2.4.0 from Zaptel, I noticed a lot of HDLC
> errors on my console:
> [Nov 27 01:15:09] NOTICE[2743] chan_dahdi.c: PRI got event: HDLC Bad
> FCS (8) on Primary D-channel of span 1
> [Nov 27 01:15:09] NOTICE[2743] chan_dahdi.c: PRI got event: HDLC Abort
> (6) on Primary D-channel of span 1
> 
> These errors prevented calls from being made and received on my PRI spans.
> 
> This seems similar to bug 15498:
> https://issues.asterisk.org/view.php?id=15498
> Which says this was fixed in 2.2...so maybe it got back into 2.4?
> 
> I can get rid of the errors by disabling the mg2 echo canceler in
> /etc/dadhi/system.conf.

Do you have a hardware echocan module installed on your card?  If so,
it's strange indeed that the error goes away when you disable mg2.

What is the complete output of your /etc/dahdi/system.conf?

-- 
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