That is just circular hunting that you order from your service provider. Ask them to set the hunting order so that the last member hunts to the first, essentially creating a circle for each company. True, if all numbers in the hunt group are busy, the subsequent callers will receive a busy signal. As Skip said, there's no way around this condition unless you have all of the lines delivered via ISDN-PRI service.

This is a very common request since people often rely upon the caller ID information of the call that they missed to return the call.

It's really quite simple.

Ed Vaughn, MBSWWYPBX