T1 problems

[robust57]

I have 4 T1's on an option 61c. 2 are used for outgoing local calls and all incomming calls, both are provided by Qwest and are PRI. My other 2 are for outbound long distance only and are provided by AT&T, standard 24channel T. My problem is that when a long distance number is dialed there's about a 10-20 second delay and then the call eventually completes just fine. What I am noticing is that the call tries to go out the dedicated LD t1's, you'll see the channel go busy then after about 1 second it gets locked out, then goes back to idle after 2 more seconds. The call then takes its second route option and goes out on my local Qwest T1's to complete the call.

I've played the finger pointing game way to long between Qwest and AT&T. When tested with AT&T they say they can't loop up my CSU. So I installed a new CSU for one of the AT&T T1's. Had AT&T test again and I get the same result. So I reterminated the all cross connects for both LD T1's and still have the problem. So I am convinced there's no problem on the CPE side, unless its possible that there's a problem with my T1 card? What else might be the problem?

Thanks

 

[johnpoole]

normal for any ld carrier to blame the csu, or switch. as long as they can get you off the phone.. set up a test phone and direct select or dial the acod plus a ld number. are you sending 1 as the 1st digit? if so, some ld carriers don't accept that. if your lcnt table is all 00's then. it's not a layer one problem... not the copper, not the card not the csu.. i've had testers see a clean loopback after i had removed the csu, and place it in the nearest dumpster. i've had testers not see a csu when they had it i loop.. if i am concerned with the csu, i remove it. they also make non latching csu's... we don't have csu's at my site because we have a fiber entrance.. your problem sounds soft, either your end or the far end.. ld 60 stat x on the t, if that is idle, lcnt x, those are the 2 software tools you need to test layer 1, and 2...

john poole
bellsouth business
columbia,sc

 

[ArchTelecom]

A little note to add: You can add MTA to the CLS of a set and turn it into a maintenance set. Makes it easy to direct select each of these trunks as John suggested above. If you are not at the site, then you can use the CALL command in LD 36 to do the same...but there has to be COT's defined.

 

[robust57]

I freaking hate AT&T.

When stat the t1s they come back idle, except for a channel that briefly gets locked out when a call is placed.

I've been checking for any errors with the lcnt command for about 2 weeks and I get no errors.

Removed the CSU, and still have the same problem.

Going to have to get both vendors on site and duke it out.

 

[mluckie1]

Sounds as if it is a trouble on ATT&T and QWEST. The AT&T circuit is extended through Qwest. Normally AT&T doesn't have a presence in your building, unless the Building has a fibre conection to AT&T. In those cases a point to point T1 is provided by the local CO so that AT&T's circuit can be extended to your location. AT&T will need to call Qwest and turn in a trouble with them. Try and put a loopback plug in place of the smart jack. If everything comes up, which by the sounds of it will, the trouble is on their end. They will need to contact Qwest, or whoever your local CO is, to get the problem resolved. Sounds as if there is a soft loop between you and them. if your equipment comes up and they cannot loopback the CSU would be my first quess. Good luck.

 

[johnpoole]

what happens when you dial the acod? remove the targ, it may not be just the co. your software and there software may be blocking.. a non pri t1 will stand up, all lamps green lcnt 0 to a loop. but when you try and dial out on it all channels will disu and stay that way

john poole
bellsouth business
columbia,sc

 

[vztech]

is the route set to ni2?
try changing the route and DCH if you have one to ni2.
I installed 2 new PRI's last week with AT&T it took 1 week. It was painfull.They are bad!
Get the Co on the phone and confirm their settings to your switch

Good Luck

 

[johnpoole]

couple fo things to try, ld 96 stat serv, toggle them. dsel, toggle that vce to vod, unless you can acod then dial out, no need look at bars.. another thing i have ran into with att, set up a dmi to delete 1, they often expect xxx-plus 7, not 1 xxx

john poole
bellsouth business
columbia,sc

 

[robust57]

Dah, Thanks for all the help everyone, good information above. Turns out AT&T changed my T1 over to a PRI. Thus causing the problem.