atcomsystems.ca/forum Forums General General Telephone & Systems Information CO issue?

I have a customer with a Partner system with 6 lines coming in. Of the 6 lines (1fb's), three are working fine. The other 3 have been dropping calls, have a really bad echo, and when they call out they don't hear any ringing, but the people on the far end do. This is the same for people calling in, they hear dead air, but the people receiving the call hear ringing. I have replaced the whole system and the problem still remains. The local provider(Qwest) keeps telling me its not their problem. Anyone have any ideas?

Have you tried a butt set at demark or even a house phone? sounds like Quest prob. Is this thru channel bank?--------------John

Swap the lines around on the control unit - if the problem stays with the CO positions, it's the Partner. If it moves with the dial tones, it's the telco. If there is nothing else between MPOE and the Partner, such as alarm or anything connected in front of the control unit, any tech from the telco will agree it's on their end.

Assuming isolating the demarc finding no problem.....

When hearg 3 lines working and 3 line having problems I think ACS and I would then look at the hardware

is it an ACS? with 3 lines on one card and 3 on the other?

Are all the lines that are bad on the same card?

Whats happens when you swap bad lines and good lines? Does the trouble follow the lines or stay on the card?

Start with isolating at the demark, remove your wiring so it is just thelecs network. If you duplicate he trouble at the nid, req a vendor meet with quest. prove to them the trouble exsist at the nid if needed request a forman be on site as well (good luck with this) If this rides a lec pairgain system it could be a defective line card in the CO

The 3 lines in question are all on the expansion card of the Partner system. I have swapped out the ACS, the 308EC, the carrier, and even the VM. I have tried arranging a meeting on site with Qwest, but the problem is sporratic so its been tough. It happens anywhere from 3 or 4 times a day to 30 or 40. I have tested at the demark with all equipment disconnected and have had the same problem. The problem is when they go out and check they stay for 5 minutes and say its working fine and they leave. I'm sure its their problem, I just don't know how to prove it to them.

How far from the CO or RT is your customer? I would ask them to do some transmission testing to measure the Loop Current, Loss, and a Freq test.

If happens at the nid it is a quest problem. Most likely a defective card in the RT

The customer is on the edge of town, but they have had the system for about 5 years and never had a problem. I just cornered one of the local Qwest techs and he is going to meet me out there this afternoon and we are going to do some testing. I will post back when I get done.

Sounds like Qwest to me. The audible ring back you hear when calling someone comes from the phone company CO, not your system. The only audible you get back from your system is on intercom ringing. The echo could be either. I like the idea of swapping the 3 good with the 3 bad. Are you on a lec local carrier?