A method and apparatus for permitting different treatment of calls from different callers. Favored callers who receive preferred treatment, the preferred treatment including the ability to complete calls, are provided with a private number. If the callers use the private number, they are subject to an incoming class of service to the called party that is substituted for the class of service provided to callers who use the public telephone number of the called station. Advantageously, at the discretion of the called party different callers may be provided with different private numbers and their calls may be blocked or completed with special alerting tones.