This problem may well be the cause of my upcoming nervous breakdown....
I have an Option 11 with one expansion cabinet, one PRI and one P2P tie line (T-1). Incoming callers on the PRI hear static. Users on the Option 11 cannot hear any static - it's one-way. There is no internal static and there is no static over the tie line, only over the PRI.
Here are the steps I have taken to resolve - all have been unsuccessful.
1. Called telco, tested clean to NIU (they've been out three times because I was sure it was them).
2. Changed riser pairs (twice) and T-1 cable to NIU.
3. Changed biscuit at demarc.
4. Removed CSU (actually, I'm not sure there ever was one).
5. Had telco test from demarc (biscuit) and clean after 5 minute quasi.
6. Replaced T-1 cable (the one that connects to the backplane).
7. Replaced PRI card, clock controller and DCH daughterboards.
In short, I've replaced every possible wiring component as well as the PRI cards. The only thing I can think of that I have not changed is the backplane - and the way things are going, that probably wouldn't fix it either.
Any other ideas?
I have an Option 11 with one expansion cabinet, one PRI and one P2P tie line (T-1). Incoming callers on the PRI hear static. Users on the Option 11 cannot hear any static - it's one-way. There is no internal static and there is no static over the tie line, only over the PRI.
Here are the steps I have taken to resolve - all have been unsuccessful.
1. Called telco, tested clean to NIU (they've been out three times because I was sure it was them).
2. Changed riser pairs (twice) and T-1 cable to NIU.
3. Changed biscuit at demarc.
4. Removed CSU (actually, I'm not sure there ever was one).
5. Had telco test from demarc (biscuit) and clean after 5 minute quasi.
6. Replaced T-1 cable (the one that connects to the backplane).
7. Replaced PRI card, clock controller and DCH daughterboards.
In short, I've replaced every possible wiring component as well as the PRI cards. The only thing I can think of that I have not changed is the backplane - and the way things are going, that probably wouldn't fix it either.
Any other ideas?