Ran into the same issue myself. Channels would go into a lockout state. Also, the BCM monitor showed calls coming in on PRI channel 5, when it was really being delivered on channel 1.
Had the same issue. I noticed what caused it was calls over the PRI to a target line that was not assigned to a set. If you watched the UIP trace in BCM monitor, it would show the first call say to B channel 1, the call is rejected. The second call to that same channel would show "channel unavailable." Hence the busy signal. You would also get a ISDN call processing error in the alarm log. Meanwhile the CO sees all channels as in service idle. 2 days on the phone with Nortel and they mentioned that they had that Core-261 patch in beta. We loaded it and it cleared the issue for me. Caused me a great deal of grief!
Does a cold reboot(power off) re-enable them?
If this issue appeared right after you installed SU18, i would open a case at Nortel, they will probably come up with another Core Patch if its really a bug in SU18.
I tried a cold reboot, but it did nothing. Also, applying the latest core update did nothing. In the end I had to replace the cards; with the new ones, the firmware update was successful after one or two retries (?) but in the end it worked.
I have to check if I can restore the firmware on the two failed cards by installing them on a un-patched system.
Anyway, I'll open a case with Nortel because it seems like a serious issue.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.