Ed -
That's the way I originaly had it, but if it's setup that way, and a call is picked up on a 2565, then someone else picks up a SLT... they get LOTS of noise until I hang up the 2565. After much checking, double checking, checking your comments (all the leads you listed from the 2565's dead end at the 66 block, with no cross connects, jumpers or clips hooked to them), as well as checking Bills suggestions.... I decided to try putting the SLT's after the card.... noise went away completely, as well as did a scratching sound that has been present on the 2565's.
So I'm a little confused on my next move, mainly because I still don't understand why the noise is present when wired as you describe.....
I'm sure I'll get it figured out eventually.
With a lot of help.
