atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services T1's, CSU's and DSU's TA850 using PTP T1 for FXs telco says Adtran problem

I have a customer with a offsite unit that had a PTP T1 installed and 2 TA850s to send analog dial tone from the main campus. Now both units show no Net and are throwing LCV and UAS errors which Adtran docs show as either a down T1 or an incorrectly provisioned one.

If I use a hard loopback plug the alarm clears on both units.

The T1 never shows an alarm at the smart jack unless I unplug it from the TA850.

Telco says the have it provisioned correctly as b8zs esf but I have my doubts since it stopped working about the same time the customer did a disconnect of most of the telco's services.

Any ideas?

If you do a soft loop through the Adtran, what happens?

Rcaman

Telco needs to DPO & test the PT2PT H2H.

Soft loop to remote doesn't work from either device.

I'll echo the others. Test the T-1. And don't forget to test the patch cables from the T-1 to the Adtrans. I can't count the number of times I've found good equipment, good circuits and rotten patch cords.

Sam

Found out yesterday that the LEC's circuit is good but the CLEC said they had a disconnect order from NOV2012 which they worked on 09JAN13. My customer doesn't have any record of that request and it didn't come from me and it only took 3 trouble tickets and 13 days for them to figure it out. Of course, the first 2 trouble tickets came back as NTF, problem on PBX which is amazing since their circuit was disconnected. Make you wonder what "testing" they actually do since they never came onsite.

Customer had to resort to POTS lines in the interim and is now going to challenge the CLEC's procedures and test results.

In my years at Bell Telephone, working with switchmen, this was known as "The trouble is leaving the CO just fine."

I have come to realize that the work of proving a circuit good or bad is in the technicians hands. The LECs and CLECs only look at their specific portion of the circuit and have no inclination to do an end to end test. Most of the time, with the exception of some Verizon techs, the LEC and CLEC techs have no or very limited training on how to properly test a "high cap" circuit. It's up to us to do what the LEC used to do. If you don't have a Tberd or equivalent, and you have systems with T-1, PTP T-1, or PRI circuits, you better get one and learn how to use it.

We had an old T-Com unit that worked very well on T-1 and we used it, sporadically over the years. However, in the past two years, we had to get a Tberd that can test all the circuits. That device paid for itself in just two months. Beside the savings, the satisfaction of knowing your equipment is functioning properly and the problem is definitely with the LEC is priceless.

Rcaman

For many CLECs & IXCs the function of the C.O. technician has changed. In days gone bye, a tech would wire a circuit, test with the LEC, provision equipment and so on.
With the advent of remote testing systems, DCS's & soft switches....coupled with the rise of high bandwidth circuits and decline of low bandwidth circuits.....C.O. technicians are (in my case) tasked primarily with installing equipment & connecting/disconnecting wires/fibers.
The testing, provisioning & activation of circuits & equipment is handled by centrally located groups of people who are tasked with those functions.