8700/4 PN's/Modems only work in 2 of 4 PN's

[CrossTalkTek]

This customer has s8710, and 4 PN's (G650's).

Trunking is only on PN 3 and 4.

Modems that are xconnected to PN 3 and 4 work fine, but modems in PN 1 and 2 do not. They won't connect, (only half of a modem handshake takes place, and modems never connect in PN 1 and 2.)

When doing a list trace station xxxx, we are seeing jitter.

I performed some Medpro tweaking advised by Denver (via the services port, and logging into the MedPro, actually these are Crossfire Media Resource boards), to no avail.

This is looking like an IP issue between PN's 1 and 2 to PN's 3 and 4.

Any suggestions?

 

[petran]

We have the exact same problem, we opened a case with Avaya and it is now escalated to Tier III. From the network side we do not see any jitter, but traces show jitter and modem calls do not work. Same system, same config...

We will see...

Petran.

 

[4merAvaya]

Check the ip-codec-set form for each of the network regions. On page 3 both FAX and Modem should be set to 'pass-through.

Kevin

 

[CrossTalkTek]

Thanks, it is set for passthrough on both.
Actually, we had problems with both Fax and Modems on PN 1 and 2, but after changing it to passthrough, it fixed the Fax issues, but the modems still fail.

 

[84Mike]

I have the same problem here. Will be interested in how to fix.

 

[petran]

I work for an Avaya BusinessPartner. If you have opened cases with Avaya, give me the case numbers, I will add my case number and ask them to check the problem more seriously...

Petran.

 

[CrossTalkTek]

UPDATE

An AVAYA RFE (local Tier 3) is tackling this problem.
It is pointing to a local network issue, and he is going to bypass the Cisco network, and hook directly to an AVAYA Cajun switch to prove it. His opinion is that, that would be quicker than putting a Sniffer on it. I don't have the skills to read sniffer data, so I'm going with his gut feelings. He has a very good feeling about this, and I know him - he's very sharp.

I will update this thread with new findings.

Thanks for all responses! It is a wonderful roundtable that you all have set up here.

My Best to all!

CrossTalkTek

 

[84Mike]

My switch is all connected thru dark fiber. All cajuns are directly connected, and I still have the issue mentioned above. I don't think it is a local network issue.

 

[johnnydialtone]

What firmware on the Crossfires? We had a modem problem on any PN with Crossfire using FW 21. Went to FW 12 and the problem went away. Eventually went to FW 24 without incident.

 

[84Mike]

I am using G650's with TN2302 MedPros.

 

[CrossTalkTek]

I was unsure about the Firmware Level, and the inads modem wasn't answering. That is why it took so long to reply to this thread. The Modem was hung up for some reason. We couldn't access the system remotely.

We reset the modem, and I did a "list config all" and verified that the Crossfire/Medpro's were at FW24.

UPDATE
RFE will work on this, in the upcoming weekend, during "Out of Peek Hours".

"Out of Peek Hours", I hate that, why don't they just say that we are going to be working, yet, another friggin weekend!. No Football, No Beer Drinking this weekend.

Welcome to Telephoney, Galldarnit. Mother Fletcher!

Sorry for venting about the Overtime.

I'll update the thread with any, and all results.

And, thanks to all who have responded.