Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations gkittelson on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

Problem with inbound calls on PRI T1 1

Status
Not open for further replies.

phonesaz

Vendor
Dec 18, 2006
880
US
I got a repair call today from a customer - their DID numbers are giving reorder tone instead of going to voice mail. There are no lights on the T1, outbound calls are fine, no lights on the CSU. It has been in place working well for over two years.

Integra found 2 of their DID numbers that complete to the switch; they don't have mail boxes, so revert to the general message. So they are now saying it is a switch problem, since they "see" the D Channel and say the Magix is receiving the call.

Upon further review, it turns out that there are 7 numbers that come into the system. They are seven of the analog lines that were converted to non-sequential DID's when the Magix was installed the beginning of 07. At the time, they were Eschelon lines. The new DID's are a different exchange from any of the ported numbers, and that contract was written with Integra.

All the extensions are 3 digit. There are no patterns or anything unusual. Do you think there can be any problem within the Magix that allows it to accept 7 random numbers and not the other 100? I am wondering if perhaps the original ones come from a different CO and the new ones are an Integra CO that possibly had some changes made over the weekend that would have impacted the ATT Custom/ESS setup. I had a huge problem last summer with an Integra switch that couldn't handle the protocol, so they rerouted the programming through an Eschelon switch (Integra has purchased Eschelon, but they still act a lot like 2 companies behind the scenes.)

Or can anyone think of anything else that would cause this? Thanks so much for any advice!
 
Start by checking your "invalid destination", under Lines and Trunks, DID. If it is set to "return fast busy", the carrier will return reorder or intercept. Set it to "send to backup extension" to have it go to the Operator.

Then get with the carrier, and have them verify what they are sending for each number.

 
I have verified that it is set to return to operator. 7 extensions are doing so, 100 are returning intercept/reorder tone even though the co tech says he sees the switch receiving it. Any other suggestions?
 
I would bet that since they were working, and 7 from a different exchange still do, the problem lies at the CO. Looks to be a translation issue. Im sure you have done a PRI printout and double checked the inbound call routing table.
 
I would request the service provider trap the DCH messages to verify just what call setup info is being sent to the Magix.

They probably screwed up the Route Index for the DID number block for the PRI trunk group. Have the provider verify ALL items...

....JIM....
 
The problem "resolved itself" overnight, but of course the CO did nothing...whatever...I am thinking they were working on something and caused temp technical difficulty
 
Diana - I was going to suggest you contact me so I could see what they were sending, but now I am certain, they figured it out.

Another CENTRAL OFFICE MIRACLE!

Also, another reason why the Bell System should never have been broken up.

Does anyone other than me understand what I just posted?





 
I understand you 100% MERLINMAN!!!

....JIM....
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top