2010/6/11 Karsten Wemheuer <k...@gmx.de> > Hi, > > Am Freitag, den 11.06.2010, 11:54 +0100 schrieb Gareth Blades: > > Olivier wrote: > > > Hello, > > > > > > I've got a running system in which logs are full of messages such as: > > > [Jun 10 07:24:14] NOTICE[2414] chan_dahdi.c: PRI got event: HDLC Bad > FCS > > > (8) on Primary D-channel of span 2 > > > > > > The strange thing is those messages are coming from a single span. > > > > > > My setup is : > > > > > > Asterisk 1.6.1.18 > > > Junghanns OctoBRI > > > with wcb4xxp driver > > > libpri 1.4.10.2 > > > dahdi 2.3.0 > > > 3 BRI lines in PtMP mode > > > > > > > > > What does this "PRI got event: HDLC Bad FCS (8) on Primary D-channel of > > > span 2" roughly mean ? > > > Why could it happen on a single port and not on the others ? > > > > > > Regards > > Basically it means that one of the messages it received on the PRI D > > channel failed the checksum. > > > > I take it that in your span command you have 'crc4' or similar specified > > as an option for all of your spans? > > > > If thats the case its probably a faulty port on the card, cable, or a > > card in the local telephone exchange, > > AFAIK CRC4 is for PRI only. The setup of Olivier is BRI in PTmP mode. > Many providers drive Layer 1 down in case of inactivity. Maybe the > driver has a problem with such lines.
Would that explain why only a single port is hit ? This port is the 2nd and the dialing pattern is DAHDI/g1 which means "start with channel 1 on span 1, then channel 2 on span 1, then channel 4 on span 2, ....". What I observed is that provider sends incoming calls alternatively to each span : if an inbound call comes through span 2 (channel 4 or 5), then the provider would send the next one to span 3 (channel 7 or 8) if available, etc ... I'll try to swap cables and see if messages are "moving" from span 2 to another span. > In this case talk to your provider > to disable this setting. > > HTH, > > Karsten > > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
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