The thing is, MOST of the time the line is forwarded, not all the time. This place is a wierd setup. They have a system with with about a dozen phones, but nobody works in the office. The manager spends most of his time in either the warehouse or the yard. He has a 3920 cordless with a couple repeaters, but experiences spotty reception. So, he's looking for an alternative. The benefit of the 3920 was he could see a call come in on line 1 and just ignore it.

St Petersburg