Hal,

Thanks for the reply.

Yes the paging unit works just fine. Icom ext 50, unit answers and then dial the zone number. REN is something to think about since the customer added a lot of phones and may have added some of them to the night service but still doesn't explain why the phones ring at night with ext 50 disconnected and don't when it is.

Tele-Net Technologies
Certified Panasonic dealer