HDLC Abort on D-Channel with Asterisk 1.8.2

Am having this message on my CLI

PRI got event: HDLC Abort (6) on D-channel of span 1

any idea why?

asterisk version: 1.8.2
dahdi: dahdi-linux-complete-2.4.0+2.4.0

Generally means it’s some issue with servicing the card’s interrupt in a timely manner. Digium Support (digium.com/support) is happy to help with these matters.