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New Member

ISDN BRI disconnected every time with User RX <- DISCp

Please be so kind to advise about the problem I got. I am trying to set up an ISDN connection to remote office. So I connect my router ISDN BRI S/T interface to NT1 ISDN jack and then line goes to telco. The BRI interface is:

Router#sh int bri 0/0/0

BRI0/0/0 is up, line protocol is down (spoofing)

Hardware is Voice NT or TE BRI

....

And the output of debug isdn q921 is like this:

*Oct 5 20:46:03.999: ISDN BR0/0/0 Q921: User TX -> IDREQ ri=86 ai=127

*Oct 5 20:46:04.019: ISDN BR0/0/0 Q921: User RX <- IDASSN ri=86 ai=112

*Oct 5 20:46:04.019: ISDN BR0/0/0 Q921: L2_EstablishDataLink: sending SABME

*Oct 5 20:46:04.019: ISDN BR0/0/0 Q921: User TX -> SABMEp sapi=0 tei=112

*Oct 5 20:46:04.035: ISDN BR0/0/0 Q921: User RX <- UAf sapi=0 tei=112

*Oct 5 20:46:04.035: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0/0/0, TEI 112 changed to up

*Oct 5 20:46:14.035: ISDN BR0/0/0 Q921: User TX -> RRp sapi=0 tei=112 nr=0

*Oct 5 20:46:14.047: ISDN BR0/0/0 Q921: User RX <- RRf sapi=0 tei=112 nr=0

*Oct 5 20:46:19.151: ISDN BR0/0/0 Q921: User RX <- DISCp sapi=0 tei=112

*Oct 5 20:46:19.151: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/0/0, TEI 112 changed to down

So every time after 10 - 15 seconds of some activity I come to DEACTIVATED status.

Is this my problem or more likely on the telco side??

Thanx

3 REPLIES

Re: ISDN BRI disconnected every time with User RX <- DISCp

Are you sure that you have configured the isdn switch type correctly?

Regards,

Leo

New Member

Re: ISDN BRI disconnected every time with User RX <- DISCp

Is it possible for you to share the config. ?

New Member

Re: ISDN BRI disconnected every time with User RX <- DISCp

Thanks everyone! People from telco day the problem is the line itself. after they make it good, I hope everything is gonna be fine!..

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