Ictelco, thanks for the very basic explanation. It actually helps a whole lot. We would not need a published number for the DC area. Would you know the process of setting that up? (What we would need... etc.) And if we did it that way, would we be able to use intercom to communicate to the other phones in CO that are hooked up to the same PBX unit? Again, all this is new to me and so thanks for all the help.