Noisy lines tru a PRI

[telepath]

I have an oooold Op11 in tandem with a CS1kM 5.5 tru a PRI link (no carrier it's in campus) A few days ago exactly every other call from any set (digital & analog) it connects with only noise (voice unintelligible very low in the background). LCNT= zero errors on either side.
I tried taking the link down and then up (including the clock), didn´t solved the problem.

I rather not reboot the Op11 if I can help it.

Any ideas?

 

[KCFLHRC]

Do you have any test equipment? T-Berd etc?

 

[KCFLHRC]

What makes you think the trouble is in the Opt. 11 and not the other switch?

 

[Firebird Scrambler]

Do you see any events in the history file?


Firebird Scrambler
Nortel Meridian 1 / Succession and BCM / Norstar Programmer in the UK
Advance knowledge on BCM support

http://www.linkedin.com/in/davidbromley

 

[anders4249]

Long shot. Make sure your grounds are secure on the Op11

 

[telepath]

thanks for Your input:
KCFLHRC: At the CS1K the link is in a Dual PRI and the other link is working fine. What's the history LD? plz
Anders I think grounding is ok, but I'll check it anyway.
This happened a few Years ago but was corrected resetting the link, but this time that didn´t work.

Thanks.

 

[KCFLHRC]

Just because one link on a dual pri is working doesn't mean the other is fine. Test Equipment will help isolate the issue. Typically noise on a PRI is clocking, slips, etc. Have you made sure in the Opt. 11 that the clocking is tracking properly?

LD 60

SSCK 0

 

[telepath]

Yes I checked that, LCNT has no errors on both sides
.SSCK 0
ENBL
CLOCK ACTIVE
SYSTEM CLOCK - LOCKED TO SLOT 9
PREF - 9
SREF - FREE RUN
AUTO SWREF CLK - ENBL
NO ERROR

I tried to let it to Free run for a while , still same problem.

 

[KCFLHRC]

I would disable everything on the OPT. 11 side and reseat the card. Is this an NTAK09 or TMDI card?

 

[anders4249]

telepath I would do what KCFLHRC suggest, if that doesn't work, I would roll the the PRI or if you have access to the CSU maybe roll that.

 

[LittleMaster]

Just OUT all the channels of the PRI on both sides and recreate again..

 

[telepath]

Solved.
It was a little less radical than littlemaster's suggestion. I restarted the PBX a couple of times, the second was the charm. I don't like to do that because some times they don't go back up at all, but this time worked fine.
Thanks to all for Your input.

 

[LittleMaster]

thanks telepath