1
Carolyn A Doughty: Method and apparatus for displaying at a selected station special service information during a silent interval between ringing. AT&T Bell Laboratories, Richard J Godlewski, April 15, 1986: US04582956 (177 worldwide citation)

Method and apparatus is disclosed for displaying special service information at a selected station during a silent interval between ringing. The apparatus, a data receiver (100), is connected to the tip and ring leads of any well-known station set and comprises a line interface unit (101), a convert ...


2
Carolyn A Doughty: Method and apparatus for sending a data message to a selected station during a silent interval between ringing. AT&T Bell Laboratories, Richard J Godlewski, November 5, 1985: US04551581 (77 worldwide citation)

For use with a telephone switching system serving a plurality of stations and having a central processor for generating data messages and a ringing circuit for generating ringing signals to a selected station, method and apparatus are disclosed for sending a data message to a selected station during ...



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