Hi Sam -

I'll test it there, I've tried it across the tuner and got sound, but never tried the terminals.

It's a K403 MOH card, and a K400E line card. One thing I was wondering was if I have the K400E punched down properly or not. I'll PM you a link to the manual for this card, and perhaps you could have a look. I can't tell if jumper 2 should be F-H or H-H. Also there is a jumper on the K403, and I don't know how it should be set.