MICS GATC going dead
MICS GATC going dead
(OP)
I recently moved a MICS. On multiple occassions card 1 which is a Caller ID line card goes dead (shows unequipped in the system). Card is there. I swapped out the card, issue returned, then I rebooted the KSU and that clears it. Could this just be power outages / quick outages? There is no UPS but one in the works. Card 2 and Trunk Module seem to be ok. Never seen cards just 'disappear'.
RE: MICS GATC going dead
Also check voltages on each line, Idle & Ring.
I had one site with 120v from Bell but that was a BCM50 and I forget what the issue/resolve was.
Maybe also try to disable the card and re-enable or tell it to be another card type and then back again...might be a bug.
Make sure no bent pins on the backplane.
=----(((((((((()----=
www.curlycord.com
Toronto, Canada
Add me to LinkedIN
RE: MICS GATC going dead
RE: MICS GATC going dead
www.linkedin.com/in/Phoneguy427
RE: MICS GATC going dead
RE: MICS GATC going dead
"Check Alarms to see if there was a reboot overnight.
Also check voltages on each line, Idle & Ring."
Make sure no bent pins on the backplane.
and--look closely as maybe one pin is pushed in too far.
It might be the backplane somewhere or the software.
Try a STARTUP and re-program to omit software, if not replace the KSU.
Another thing you could first try...
Reverse all the lines from the modem at the KSU.
See if problem stay's or follows.
Follow would then maybe be a modem issue, too much voltage or shorting out.
2 modems or 1 8 port?
=----(((((((((()----=
www.curlycord.com
Toronto, Canada
Add me to LinkedIN
RE: MICS GATC going dead
Nortel also came out with a POTS Evaluation Kit that tested CO Battery, Loop Current, Ring Voltage, and Ring Trip. We used this to confirm the problem.
RE: MICS GATC going dead
RE: MICS GATC going dead
Customer attached UPS but did not plug in battery.
Time will tell.
RE: MICS GATC going dead
RE: MICS GATC going dead
Joe
FHandw, ACSS, ACIS
RE: MICS GATC going dead
RE: MICS GATC going dead
RE: MICS GATC going dead
I had cable company move lines 3 & 4 to a different modem which had spare ports.
Why just lines 3&4?
I had mentioned this above:
Reverse all the lines from the modem at the KSU.
In other words lines move lines 1-4 from card 1 over to card 3 on the 12X0 and the 3 lines on card 3 over to card 1.
This will assist to see if there is an issue with the KSU mobo.
=----(((((((((()----=
www.curlycord.com
Toronto, Canada
Add me to LinkedIN
RE: MICS GATC going dead
I already have main number forwarded down to card 2 and 3. Traveling to the location can become a problem so I don't want them all down and have to rush back. Can't tolerate too many missed calls. We are managing but it's weird how the card fails 12+ hours later.
RE: MICS GATC going dead
Aside from KSU swap it's looking like the resistors noted above by Nortel4Ever are the best bet.
"Losing it over here!"
I know that feeling.
I had a similar frustrating issue on a CICS years ago where the phone system would reboot randomly on an inbound call.
After countless troubleshooting it turned out that line cards ending in D, E and first version F were problematic in this particular case which was a an office trailer in a remote location.
Line issues have gone up the past couple years, mostly modem related be it with TV Cable or Fibre feeds.
A case with the reverse, not enough voltage, a fibre connection from Bell Canada going to their modem "4000" was not providing enough voltage, I think is was 35v.
After changing the card several times it was the older CLID cards that stuck out an inch that did the trick.
A year ago I replaced line cards to sort audio issues with cutting out and garble...I blamed Rogers cable company.
They came out and admitted that it was a cable issue and referred to another outside division to fix it, and they said others in the immediate area had the same issue.
A week ago the problem returned, Rogers replaced the modem and said it was fixed, I then was called because the client said it was not fixed so I came and replaced the line cards at their wish.
2 days ago it deteriorated really bad so I went to site right away, I said you can call Rogers or we replace the KSU (CICS), they agreed to KSU as we wouldn't charge for the part if it did not fix it.
Replaced KSU and same issues, so I called Rogers for them to put in a ticket.
The Rogers tech came same day, admitted that it was a cable issue and referred to another outside division to fix it, and they said others in the immediate area had the same issue.
Yes, cut and pasted, it was the exact same thing another tech said a year ago.
Bring a spare KSU with those resistors...and a sledge hammer.
=----(((((((((()----=
www.curlycord.com
Toronto, Canada
Add me to LinkedIN
RE: MICS GATC going dead
Customer is committed to the Norstar which I must respect.
Now I have to figure out how to neatly do this resistor setup. I don't want to make a mess of it.
RE: MICS GATC going dead
Solder (x-connect to resistors) and Heath Shrink over top.
Otherwise B connects or the 3m Scotchloks or alike.
Terminal screw blocks of sorts.
=----(((((((((()----=
www.curlycord.com
Toronto, Canada
Add me to LinkedIN
RE: MICS GATC going dead
RE: MICS GATC going dead
RE: MICS GATC going dead
I am curious as to what vintage card this was, and if cards made after that were tried by jssad.
Looks like 3 days up time so far?
=----(((((((((()----=
www.curlycord.com
Toronto, Canada
Add me to LinkedIN
RE: MICS GATC going dead
RE: MICS GATC going dead
Time for some stars for Nortel4Ever.
=----(((((((((()----=
www.curlycord.com
Toronto, Canada
Add me to LinkedIN
RE: MICS GATC going dead
RE: MICS GATC going dead
That's the exact same card I spoke of above:
"I had a similar frustrating issue on a CICS years ago where the phone system would reboot randomly on an inbound call.
After countless troubleshooting it turned out that line cards ending in D, E and first version F were problematic in this particular case which was a an office trailer in a remote location."
I had posted it as "NT7B75AAAF GATC CLID"
The cards ending in "G" was the fix.
=----(((((((((()----=
www.curlycord.com
Toronto, Canada
Add me to LinkedIN