Voice over data modem with selectable voice compression

Details Voice over data modem with selectable voice compression Voice over data modem with selectable voice compression

H - Electricity

04

M

H04M 11/06 (2006.01) H04L 5/14 (2006.01) H04L 29/06 (2006.01) H04M 7/00 (2006.01) H04M 3/533 (2006.01)

Patent

CA 2193663

A personal communications system enables the operator to simultaneously transmit voice and data communication to a remote site. The personal communications system is equipped with two telephone line interfaces to allow connection between two remote sites. The connection between the first remote site and the local site may operate in a voice over data communications mode to simultaneously send compressed voice and data. A digital transmission protocol which is consistent with current packet standards is used to create an independent channel through use of a modified supervisory packet for negotiating communication parameters, including the speech compression algorithm, the speech compression ratio, the communication multiplex scheme, and other operations needed for control of remote hardware interfaces.

Cette invention se rapporte à un système de communications personnel qui permet à l'opérateur de transmettre simultanément de la voix et des données jusqu'à un lieu distant. Ce système de communications personnel est équipé de deux interfaces de lignes téléphoniques pour permettre la connexion entre deux lieux distants. La connexion entre le premier lieu distant et le lieu proche peut fonctionner en mode de communications voix/données pour envoyer simultanément de la voix et des données comprimées. Un protocole de transmission numérique, compatible avec les standards de paquets courants, est utilisé pour créer un canal indépendant, grâce à l'utilisation d'un paquet de supervision modifié servant à négocier les paramètres de communications, tels que l'algorithme de compression de la parole, le taux de compression de la parole, le chemin de multiplexage des communications, ainsi que d'autres opérations nécessaires pour commander les interfaces matériel distantes.

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