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Not able to make and receive calls in BCM 450

Not able to make and receive calls in BCM 450

(OP)
Nortel BCM 450 is working fine and suddenly getting "No free lines available" I checked for the alarm and below is the one I am getting.

Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.

Do I need to check with my carrier end or anything I need to check with the module?
-BCU

RE: Not able to make and receive calls in BCM 450

What kind of lines?

Marv ccna

RE: Not able to make and receive calls in BCM 450

(OP)
We have only PRI connected to our BCM450.

RE: Not able to make and receive calls in BCM 450

(OP)
I am really sorry at that time I worked with Airtel and they did some changes with the switch end. After that I didnt faced any issue.
Yesterday what happened was when the PRI goes down I get the amber led on the DTI card. At that time no free lines available error.
When the amber light goes off -users will be able to make calls and receive calls. Yes I am not powering off the entire system.
Just pulling the DTM module and putting it back. This what I am doing.
-BCU

RE: Not able to make and receive calls in BCM 450

Ok try changing the Clock Source to External Primary perhaps then check alarms again if issues still.

What was the Alarm ID numbers?

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www.curlycord.com
Toronto, CAN

RE: Not able to make and receive calls in BCM 450

(OP)
Still I am getting the same repetitive errors.
Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.

I have one spare DTI card from BCM400, Can I go for replacement? Any settings and configuration need to be check for changing this card?
Let me know the procedure for replacing the card.
-BCU

RE: Not able to make and receive calls in BCM 450

Most if not, all BCM modules will have dip switch settings at the back and these need to be the same as the one that you are replacing. The golden rule should be that you power down the BCM first before replacing the module, but having said that I have had cases where I had to hot swap a module to fix a fault.

Firebird Scrambler

Nortel & Avaya Meridian 1 / Succession & BCM / Norstar Programmer

Website = http://somertel.com
linkedin

RE: Not able to make and receive calls in BCM 450

(OP)
I have disabled the card and set the same switch settings of the old card, then replaced. Still I am having the issue. Also I am checking with service provider Airtel locally.
-BCU

RE: Not able to make and receive calls in BCM 450

(OP)
I didnt switch any patch chord. I did card replacement on Friday. Where and what to check for the patch chord?
-BCU

RE: Not able to make and receive calls in BCM 450

(OP)
Though I replaced the card, still I have issue in PRI. I am getting "NO Free lines" error frequestly.
And every time I am resetting the DTIM Module.Anything needs to be check or issue with the card?

-BCU

RE: Not able to make and receive calls in BCM 450

When replacing the module, were the dip switches at the back altered to match the one replaced?.

Firebird Scrambler

Nortel & Avaya Meridian 1 / Succession & BCM / Norstar Programmer

Website = http://somertel.com
linkedin

RE: Not able to make and receive calls in BCM 450

Just throwing this out there...

I have, in the past, run across an issue where a module was a little "sloppy" in the slot and just by touching it, the module would go out of service.
May not be your issue but something to look at. See if you have green lights on your PRI module and then wiggle it and see if the light goes amber.

Just a thought.

RE: Not able to make and receive calls in BCM 450

Did you ever try replacing the patch cord as suggested above?


And to follow up with jaxuser above, I haven't personally had a "sloppy" card however I have had a "sloppy" jack on the front of a dti card. But the fact that you swapped out the card most likely would have eliminated that issue.

www.number1telecom.com

RE: Not able to make and receive calls in BCM 450

(OP)
Yes, I matched the dip switch settings with the old one. I dont have sloppy jack and the DTM module perfectly fits to the slot.
Whenever the issue comes I see the amber light on the receive error. After either I pull the PRI cable or entire module out from the jack, the amber light goes off. Then the users are able to make calls successfully. This is happening 30 minutes interval of time.
-BCU

RE: Not able to make and receive calls in BCM 450

You never did answer this:
What was the Alarm ID numbers?
Ok try changing the Clock Source to External Primary perhaps then check alarms again if issues still.

Add Event ID numbers too.

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www.curlycord.com
Toronto, CAN

RE: Not able to make and receive calls in BCM 450

I would request a vendor meet. Could be the card in the Smart Jack at Dmark. Had one that some how the wires go swapped.

RE: Not able to make and receive calls in BCM 450

(OP)
I am getting the alarm 328 and 323 continuously. I have changed the clock source to primary external. Still I am having issues. Getting amber light on the receive LED(Top) Either I have to pull the PRI cables or entire DTI module from the system to restore it. Then it will work for 30 minutes after that getting the same issue. Done testing with the airtel vendor using the PRI meter and he showed no errors on the E1.

RE: Not able to make and receive calls in BCM 450

You have a clocking issue as Curly has stated. When you reset the DTM, the PRI will work for some time (30 minutes sounds about right) until the clock drifts so much that the PRI cannot maintain sync and you will get the alarms you are getting. I'll bet your users are getting static and choppy conversations after about 15-20 minutes as well.

Your carrier is at fault. Don't let them tell you any different. I've lost track of how many times a carrier denied it was their fault only to be proven wrong. Tell them to send a tech with a BERT tester that knows how to use it.

Good Luck.

RE: Not able to make and receive calls in BCM 450

Ok I just wanted to verify thanks, both are the same...

323: | CAUSE:
323: | This event is generated when the short-term alarm
323: | threshold has been surpassed in the DT cartridge for the
323: | detection of a degraded minute.
323: | ENVIRONMENT:
323: | Network problems At this point, action has not been taken
323: | in the KSU, but the DT cartridge CP F/W is in a no-new-calls
323: | state.
323: | (parameter 1 = DT cartridge number)
323: | HUMAN ACTION:
323: | Intervention is required to find out why the DT cartridge
323: | is alarmed.


328: | CAUSE:
328: | This event is generated when the short-term alarm
328: | threshold has been surpassed in the DT cartridge for the
328: | detection of a line code violation.
328: | ENVIRONMENT:
328: | Network problems At this point, action has not been taken
328: | in the KSU, but the DT cartridge CP F/W is in a no-new-calls
328: | state.
328: | (parameter 1 = DT cartridge number)
328: | HUMAN ACTION:
328: | Intervention is required to find out why the DT cartridge
328: | is alarmed.

Here is just one of may examples: http://www.tek-tips.com/viewthread.cfm?qid=1609436



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www.curlycord.com
Toronto, CAN

RE: Not able to make and receive calls in BCM 450

(OP)
Still I am facing issue.
Alarms are :
1.Core Telephony - "Degraded Minute"short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.
2.Core Telephony - "Line Code Violation" short term alarm threshold has been exceeded on the DTM. The module is in a no-new-calls state.

And every time I am resetting the DTI card manually by pulling out and put it back.

RE: Not able to make and receive calls in BCM 450

FYI the MBM's are not hot swappable....you should power down the BCM before removing or adding any MBM's or you may damaage the MBM or the BCM or both.

So far:
DTM MBM was replaced
DTM MBM dip switches were check
CSU changed to Primary
This is not doing too much since the problem started last October

You still (asked twice ablove) have not answered if you have switched the patch cable.

If your programming is correct are not going to insist to the carrier that you have done everything and lie your face off then I would maybe switch out the BFT, then the Power Supply then the Hard Drive then let us know how you made out.

You might want to think about calling in a BCM tech or at least calling a BCM vendor for support if your in some remote location.




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www.curlycord.com
Toronto, CAN

RE: Not able to make and receive calls in BCM 450

(OP)
Hi Curly

As you said so far I had done 1.DTM MBM was replaced , 2.DTM MBM dip switches were checked and 3.CSU changed to Primary.
Still I am facing the issue.
Could you please tell me what needs to be checked the patch cable? As you said from last october we are having issue. Before that no issues.
-BCU

RE: Not able to make and receive calls in BCM 450

The patch cables goes from the DTM card (that you keep resetting) to the Carriers equipment.
Replaced it, maybe swap it with somebodies PC on site and see if it works or if the PC user now has issues.

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www.curlycord.com
Toronto, CAN

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