Ping Li

TL;DR: In this article, a negotiation handshake protocol is described which enables the two sites to negotiate the compression rate based on such factors, such as the speed or data bandwidth on the communications connection between two sites, the data demand between the sites and amount of silence detected in the speech signal.

TL;DR: In this paper, a personal communications system enables the operator to simultaneously transmit voice and data communication to a remote site, using a modified supervisory packet for negotiating communication parameters, including speech compression algorithm, the speech compression ratio, the communication multiplex scheme, and other operations needed for control of remote hardware interfaces.

TL;DR: In this article, a personal communications system equipped with two telephone line interfaces to allow connection between two remote sites is described, where the connection between the first remote site and the second remote site may operate in an analog voice mode, a digital data communications mode, and a voice over data communication mode.

TL;DR: In this paper, a personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer, which includes telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line.