I also use local numbers, but I have them forwarded to my 800 number. With this system I can go online and see the name of the person who called, the time, which number they called, and where I had that call forwarded to. This is good for several reasons. If I was too busy to answer the phone I can find out who called (by name)and call them back.This has worked great for me during slow times. I can also have the calls forwarded to any number I want on the fly. For ex. If I go away for the weekend I can have all calls forwarded to the employee on call that weekend.
Although I could do what A-line does by having all local numbers forwarded to just (1 )800 number and then ask where they got my info. This would be the best of both worlds but I would have to make sure that it was asked every time the phone was answered.