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MICS PRI Outbound calls

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covcom

Technical User
May 13, 2002
62
US
I have a Mics 5.0 w/ pri. About a year ago, they were receiving calls but unable to call out, I rebooted the system and the problem was fixed. Now the system needs rebooting weekly or more. Software? KSU? DTI card? Replace it all? Thanks for your help
 
Are they on a maintenance program ? I would start by getting the Vendor of the PRI involved. Their csu for the PRI may be bad or the C.O. may have some promblem.If that checks out then I would start by swapping out the DTI card and the Cat 5 cable connecting the PRI.If that doesn't work I would then swap out the power supply on the Mics and then the cabinet and so forth. That's a tough one to trouble shoot.
 
First, check the 'Network' log under maint. Alarm 75's and Evt 330-337 are typically phone company dropping you and then the DS1 syncing up again. If you catch it when it's first down, check the smart jack......that may tell you something ( phone company guy in SAC 2 blocks away tracing wires and yours happens to be loose, .....). Typically, you don't have to reboot the whole system, disabling and re-enabling the card in s/w (maint)is enough. Everything has a threshold and when the DTI card gets overwhelmed with errors, it won't auto-restore. While you may have a problem with on-site eq, keep this in mind: the phone company has 3x-15x the equipment that you do to go bad (repeaters, smartjack, DSX wiring, digital card, potentially miles of cable, Lightspan eq,......). Just check/replace all connections on your side of the smartjack.
 
Thanks, I'll change out the DTI card and the patch cord.
The local telco has already said the problem is mine.
Imagine that!
Thanks again
 
I replaced the DTI card and patch cord, The customer has since had to reboot the system. The local telco (embarq) installed the MICS and the PRI. They no longer have a maintence contract. It's been my account for about 3 years.
When Embarq came out and checked there side about 6 months ago, they said everything was ok, they told the customer they needed to upgrade the software. Would you try this?
I have not checked the clocking. How do I check? I may instruct the customer on how to disable the card. This is a medical facility and they reboot before I get there. No alarms have been diplayed.
Thanks again
 
I would upgrade the sw. Make sure you take them to at least 6.1MR. I usually just go to 7.1.
 
If I just upgrade to 6.1MR, will the system maintain its current programming?
Thanks again
 
I found out 6.1 would not work w/ 4.0 Nam, So I went with 5.0....I'll let you know how this turns out.
 
I know others will disagree, but I've had pretty good success with 5.0 and PRI.

You're right- to get past that, you'll have to upgrade the NAM.
 
covcom? Has this been resolved yet? I ask due to the fact I've a very similar problem.
 
It has been about 1 week. So far so good, I feel better after a month or more.
 
Had to reboot the system this morning, problem still not solved. I guess I'll change out the KSU.
 
You will first need to get the PRI key code regenrated via KRS system at Nortel if you 1. opt instead to do a re-install the programming (which may clear any bugs) or 2. when swapping the cabinet.



=----(((((((((()----=
curlycord
 
I'm going through the same thing! I replaced the KSU, T-1 card, service card, smart jack & patch cord. 2nd MICS w/ 5.1 software. Paetec & Qwest, the "carrier" have done intrusive testing and say the circuit are good on thier side. Qwest sent a guy 2 days ago to the site. He tested the NIU, smart jack & patch cord and says everything on thier side is good and that it's the CPE equipment!
On the system I have the CSU turned on, clocking set to Primary, NI-2, ESF-B8ZS. Thier are a few other settings, which I'm not sure what they do, If someone out there has some feedback would be great.;
 
Ductape. I believe we have a solution. It's worked for our setup anyway . . . 3 weeks with no complaints from the customer.

Hopefully your setup is the same. Ours is a MICS with a PRI connected to a 5ESS switch at the C.O.

This link shows someone else with the same setup and symptoms I had and what was needed to fix it. (having the C.O. turn off b-channel services on the PRI)

Hopefully QWEST has the 5ESS switch and can make this change for you.

Good luck.
 
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