Software echo cancellation enabled? I have seen this problem and had to use HW echo cancellation module. After X many calls the echo cancellation put high load on the system. ( Still was under 1.0 ) but aparently it was affecting the low level HDLC driver. On Sat, Jul 30, 2011 at 2:53 AM, Nyamul Hassan <nyamul at gmail.com> wrote: > Hi, > > We are getting the following errors from time to time: > > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Bad FCS(8) on span 1/0 > WARNING[32196]: app_dial.c:1328 wait_for_answer: Unable to write frametype: > 2 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Bad FCS(8) on span 1/0 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Bad FCS(8) on span 1/0 > WARNING[32261]: app_dial.c:1328 wait_for_answer: Unable to write frametype: > 2 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Bad FCS(8) on span 1/0 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Bad FCS(8) on span 1/0 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Bad FCS(8) on span 1/0 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Abort(6) on span 1/0 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Abort(6) on span 1/0 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Bad FCS(8) on span 1/0 > NOTICE[29077]: chan_dahdi.c:3312 my_handle_link_exception: SS7 got event: > HDLC Abort(6) on span 1/0 > WARNING[32264]: app_dial.c:1328 wait_for_answer: Unable to write frametype: > 2 > > > What I've read over this mailing list and elsewhere, it is mostly due to a > hardware error. > > Is there a way to check the hardware errors? Like, to see the line error, > bit error, crc error of the E1 line? That would help us in debugging > transmission related issue. > > Regards > HASSAN > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-ss7 mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-ss7 > -- Robert -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-ss7/attachments/20110801/e2809f09/attachment.htm>
|