Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

T1 questions with Norstar

T1 questions with Norstar

T1 questions with Norstar

We use AT&T for our T1 and they just love to blame the equipment. Does anyone have any thoughts on the following:

Can too many errors received on the t1 card cause the whole phone system to freeze and then reset itself?

When I call our 800# (on our T1)I get a dead-air for about 10 seconds and then a fast busy signal. I reset the T-1 card and can then make 2-7 or 8 successful calls to the 800# before I start to get the fast-busy again. Has anyone ever experienced this?

AT&T says they test fine and are getting errors from the KSU when they loop it. My phone vendor says AT&T is full of it. He subscribes to GIGO.

If anyone can point me in the right direction, I would appreciate it.

Thank you in advance,

RE: T1 questions with Norstar

It sounds to me like it might be worth your while to have your own CSU . If they are testing Clean to there NIU or smart jack but dirty to the CSU they will blame the equipment every time . We have our own CSU's in place just to prevent this . As I can remotly set our CSU in Loopback for testing . There Is the possibality your T1 card is bad . Has your vendor looked into that ?
If you need a good Brand CSU I can give you one .
We use Carrier access Adit 600 with Quad T1 cards . It is basicly a Mini dax . If you want to look at there products you can go to
They are very easy to install and maintain .  

If you find a tip helpful Please take a moment to mark it as such.

Mario Mazza
Telecommunications Specialist

RE: T1 questions with Norstar

Do a loopback from your DTI. The DTI does have its own csu/dsu. make sure of your setting with AT&T ami, b8zs ( sf, esf )

Fisher CCNA

RE: T1 questions with Norstar

Thank you.

Anyone know where I can pick up a t-bird?

BTW, how do I mark a reply as helpful?


RE: T1 questions with Norstar

I found a few good t-birds on ebay .

If you find a tip helpful Please take a moment to mark it as such.

Mario Mazza
Telecommunications Specialist

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members! Already a Member? Login

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close