1
Anthony J Catanzaro, Steven C Dzik, Charles Hull, Mahendra Pratap, Jerome Prestinario, Minakanagurki V Ranganath, John F Ribera: Image and audio communication system having graphical annotation capability. AT&T, John A Caccuro, March 26, 1996: US05502727 (73 worldwide citation)

A telephone apparatus enables the approximate simultaneous transmission and reception of audio interleaved with image and graphical annotation signals, in data packet form, over an analog line which connects the apparatus to a switched telephone network. The audio data packets are transmitted at a p ...


2
Nuri Ruhi Dagdeviren, Jerome Prestinario, Kenneth R Klein, Mahendra Pratap: Method and system for interoperating between ISDN and PSTN transport for allowing simultaneous transmission of voice and data over one telephone line. AT&T, Morgan & Finnegan, July 28, 1998: US05787088 (25 worldwide citation)

A telephone system simultaneously transmits voice and data through a public switched telephone network and over one telephone line between a calling party location having an ISDN connection and a destination party location having a POTS analog connection. The calling party location determines if the ...