Sorry for the delayed response been out sick. Nothing else changed with the system just dropped a line. Same provider. Even thought it was the provider and they came out and showed me thru a handset that the caller ID info was being sent on all the lines. It makes no sense to me but that is why I asked the experts. I have just changed the ring delay to 04 and that did not help. I have not moved the working line to a different CO port. How would I do this?