[cisco-voip] ISDN PRI problem

[Abebe Amare]

Thanks for the quick response guys. I will try both of Mark's and Darel's
suggestions.

On Mon, Nov 23, 2009 at 7:54 PM, Mark Holloway <mh at markholloway.com> wrote:

> I have experienced this before. It could be a physical problem.  Try
> replacing the cable from your E1 port to the Telco equipment.  If replacing
> the cable does not work try re-seating your VWIC.
>
> On Nov 23, 2009, at 8:05 AM, Abebe Amare wrote:
>
> > Dear,
> > Cisco ISR 3845 (image c3845-spservicesk9-mz.124-21)connected to telco
> with ISDN PRI is experiencing ISDN problems. When the problem happens I
> notice TIMER_RECOVERY on the layer 2 status and I will do a clear interface
> serial 2/0:15 and clear controller E1 2/0 which will change the layer 2
> status to MULTIPLE_FRAME_ESTABLISHED. But outgoing calls can not go through
> unless I do a reload of the router.I get the following error when I do a
> debug isdn q931
> >
> > Nov 23 07:02:34.385: ISDN Se2/0:15 Q931: TX -> RELEASE_COMP pd = 8
>  callref = 0x254F
> >         Cause i = 0x80E6 - Recovery on timer expiry
> > Nov 23 07:02:34.385: ISDN Se2/0:15 **ERROR**: CCPCC_CallOrigination:
> SETUP timed-out (2nd T303) to NETWORK.  The SETUP failed.
> > Nov 23 07:02:35.385: ISDN Se2/0:15 Q931: TX -> RELEASE_COMP pd = 8
>  callref = 0x254F
> >         Cause i = 0x80E6 - Recovery on timer expiry
> >
> > The configuration on the serial interface is as follows
> >
> > controller E1 2/0
> >  pri-group timeslots 1-31
> >  description Temp-Outgoing
> > !
> > !
> > interface Serial2/0:15
> >  no ip address
> >  encapsulation hdlc
> >  isdn switch-type primary-net5
> >  isdn incoming-voice voice
> >  isdn map address 012* plan isdn type national
> >  isdn map address 015* plan isdn type national
> >  isdn sending-complete
> >  no cdp enable
> >
> > I have attached output if debug isdn q921 messages before and after the
> reload of the router.
> >
> > regards,
> >
> > Abebe Amare
> > Network Engineer, VivaCell
> > CCNP, CCNA (Voice)
> >
> >
> >
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>
>
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