audio response

[efc]

Hello,just wondering how some of you,check the audio response of a phone line,dry,voice grade line,called RTNA where I am,which would be used in voter systems.I would like to make that part of regular checks for the guys that I work with so I can tell the status of the phone line,and speaking of phone lines,has anyone else experienced the wonderful world of ATT and their tech help.I have been having repeat issues and it is driving me nuts,these are RTNA.



Thanks

[Bill_G]

I use an audio sweep generator and spectrum analyser made by Dalman, but they are chicken teeth these days. Unless you can find some old telco test equipment like an audio network analyser or a TIMS, you will probably have to roll your own. You can still buy a TIMS (transmission impairment measurement set), and you can rent them. There are free downloads out there for audio spectrum analysers that use your soundcard as the input. Some have more features than others. You'll want a precision noise generator too. But, you'll have to make your own 600 ohm balanced interface.

As for telco leased line service these days, they seem to be wanting customers to move on. The support ain't what it used to be.

[N4DES]

We used to use a TIMS set and swept 300 to 3000 and logged it on paper. Not that it is very time consuming, but you need 2 technicians to preform the task.

[MSS-Dave]

I'm finding support for RT circuits is getting worse with all of the legacy analog equipment getting long in the tooth. In fact, AT&T notified my company that they are ending support for our 4 wire analog data circuits. In the process of moving to MPLS now. I even have problems with nailed up T-1 circuits. If you want DSL, you are golden.

Dave

[Bill_G]

I'm finding support for RT circuits is getting worse with all of the legacy analog equipment getting long in the tooth. In fact, AT&T notified my company that they are ending support for our 4 wire analog data circuits. In the process of moving to MPLS now. I even have problems with nailed up T-1 circuits. If you want DSL, you are golden.

Dave

Yep. Essentially they are saying "Here is the cloud. Build out your connectivity and manage it yourself." In some ways it's a plus - you can connect any site to any other site at will without having to order new circuits. But, you are now in the wild, and must protect yourself from intrusion.

[efc]

Thank you,I feel better knowing that it is not just me.ATT just cleared one of my RT circuits yesterday,got rid of the volts.Before that,I got to talk to a CO tech that told me I had to go see my local business rep, I said....uh no...I ail not .Then the next day another called me and said" well we moved a jumper......don't know how that happened.So after two weeks, the fix probably took what....30 seconds,if that.