DAHDI Drivers and HDLC Errors

Asterisk Asterisk Support
1

Hi,

We currently receive intermittent HDLC errors:

Aug 27 17:58:26] NOTICE[2845] chan_dahdi.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1
[Aug 27 17:58:27] NOTICE[2845] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span 1

When these errors occur, the line quality is very bad and some calls get dropped.
We believe that it could be the DAHDI drivers, as a reboot of the server resolves the issue. We did try to downgrade from Dahdi 2.2 to 2.1 but that failed.

We currently use:
Elastix 1.5.2-2.3
Asterisk 1.4.26.1
Dahdi-2.2.0.2-4

There are 2 cards installed:
Wildcard TE121
Wilcard TDM2400P

Both have a Wcte12xp echo cancel card installed.

Any help on how to resolve this problem would be appreciated.