Look to see if they are in the incomming ring group. Generally with analog lines it's ring group 1. This has o be defined before they can ring in this scenario. If they used call coverage keys for this then it's another proceedure but alot more complicated. BTW, more than one company used system admins to do this when it has nothing to do with your job description. I came from the data side and I can tell you for a fact it takes the same amount or more taining to program large phone systems. I mean, unless you went to a University or college to get a computer science degree, (like I did) alot of what you learned has nothing to do with computers. Logic and flowcharting and the keys to programming both phones and computers.