Solved: AS5350 D-Channel Out of Service on Nortel DMS

kleclaireultratek · ‎03-24-2008

I am trying to connect an as5350xm to my nortel dms via ISDN PRI. I have many other 5300's and 5400's connected this way. My problem is that on the as5350 I cannot get the d-channel to come into service. I am testing this with 2 T1's in an nfas group with a single d-channel on the first t1. When I run a sho nfas group the d-channel state goes from waiting to "out of service". I've tried using both primary-ni and primary-dms100 switch types.

Does anyone else have this issue? I dont have a problem with 5300's or 5400's.

paolo bevilacqua · ‎03-26-2008

Yep. Please remember to rate useful posts with the scrollbox below!

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paolo bevilacqua · ‎03-24-2008

Any chance is something on the circuit ? "debug isdn q931" should revel if that's the case.

kleclaireultratek · ‎03-24-2008

I doubt it as I can plug in any of my AS5300's or AS5400's to the same circuit and the D-Channel comes up. Its weird because the DMS see's the d-channel as up and in service, but the cisco does not.

I will run some more debugs on it tomorrow and look through the q931 messaging. I'm not an expert on isdn signaling so if you or anyone else cares to take a look at them that would be great.

paolo bevilacqua · ‎03-25-2008

Some IOS have ISDN broken code. You can load the same IOS version that works on the 5400, on the 5350 to be on the safe side.

kleclaireultratek · ‎03-26-2008

So I changed to 12.4(19) and the d-channel comes up flawlessly!

paolo bevilacqua · ‎03-26-2008

Yep. Please remember to rate useful posts with the scrollbox below!