04277649 is referenced by 308 patents and cites 6 patents.

A telephone system is disclosed for providing customized telephone services. A called customer can screen calls incoming to his station based on the identity of the calling line. The calling line's identity is forwarded to the switching office containing the called customer's screening memory. The memory is interrogated to ascertain the call disposition based on information priorly put in the memory by the called customer. Selective call waiting, selective call forwarding, priority ringing, and many other customized services are contemplated.

Title
Method and apparatus for screening telephone calls
Application Number
6/113384
Publication Number
4277649
Application Date
January 18, 1980
Publication Date
July 7, 1981
Inventor
Daniel Sheinbein
Elizabeth
NJ, US
Agent
Charles H Davis
Assignee
Bell Telephone Laboratories Incorporated
NJ, US
IPC
H04M 3/42
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