The Microsoft CBCP allows a number of ways to determine the callback number:
- The party called does not call back.
- The called party allows the caller to specify the callback number itself.
- The called party knows the callback number and calls this number only.
CBCP enables a Windows computer to connect to the device and to be called back by it. The three possible settings are selected in the Remote sites list via the entries for automatic callback and the phone number.