atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services T1's, CSU's and DSU's PRI problem; I am running out of options

Well, here's today's update. XO was kind enough to reactivate their old circuit and put a test number on it. The customer moved the system back to the XO circuit and it worked perfectly!

They then contacted Verizon and had caller ID removed from their circuit and it worked perfectly.

This is so painfully obvious that it's a Verizon programming problem an has been since day one, yet they still refuse to tear out and rebuild the circuit.

The customer is now seriously considering going back to XO since they went above and beyond to help a customer, even one that's not their own anymore. I can't say that I blame them.

That's impressive that XO would do that. I'm glad you've proven the problem and I hope the customer pays your bill.

Switch carrier, problem clears. Turn off CID, problem clears. It's still not our problem? Boy they must really have some whiz bang techs. Thanks for letting us know Ed.

It's a shame, but I can't blame them if they switch back to XO Communications either. Cheers to the XO folks for allowing a previous customer the ability to prove that this problem wasn't with their local Vodavi System. Calls dropping versus no CID is not an acceptable response from Verizon, and it shouldn't take them very long to tear down and rebuild their PRI.

You were right, Bill! :thumb: There is some type of corruption in the CID being sent from Verizon to this Vodavi System.

Wow...that is very impressive of XO, very impressive.

Mike, that was just a lucky guess. Like I said I don't hold a candle to the knowledge of PRI's as most of you do on this board. Got to get lucky once in awhile. Ed proved it when he had them turn CID off. You'd think that would have nailed it and they would have no problem pursuing THEIR trouble.

Bill, I see what you were saying. I thought you meant that a PRI sends the CID on the second ring, normally. I know you're a T-1 whiz and I was doubting myself, not trying to call you out.

-Larry

Hey Larry, I doubt myself. So no problem. My strength lies in 10 pin arms.

I originally thought that the same "incoming calls" problem was occurring over either provider's PRI, hence a software problem at the Vodavi. Ed really pushed them in the right direction to isolate the problem directly at Verizon. This must be an extremely rare problem with CID over a PRI.

Have heard of issues where the delivery of name and number in a single packet vs. usuall dual packet structure can cause trouble.