Local multichannel distribution system including telephone...

H - Electricity – 04 – N

Patent

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Details

H04N 7/173 (2006.01) H04B 1/74 (2006.01) H04M 11/08 (2006.01) H04N 7/20 (2006.01) H04Q 7/24 (2006.01)

Patent

CA 2208397

To increase reliability of telephone services in a local multichannel distribution system, a switching function to a bypass line is added not only to a terminal unit, but also to an entire system, and reliability of a line is increased by employing a microwave radio link and a public telephone line network. In a local multichannel distribution system capable of providing services of pictures, data, and telephones by highspeed wireless transmissions, when a failure happens to occur in a wireless line used to connect a base station to set top boxes, the set top boxes are connected to the public telephone line network as a first bypass line. When a failure happens to occur in a cable (coaxial cable and/or optical fiber cable:PSTN) used to connect a head end station with the base station, both the head end station (node station) and the base station are connected to the microwave line as a second bypass line.

Pour améliorer la fiabilité des services téléphoniques dans un système de distribution multicanal local, une fonction de commutation à une ligne de contournement est ajoutée non seulement à une unité terminale, mais également à l'ensemble du système, et la fiabilité d'une ligne est accrue grâce à l'utilisation d'une liaison radio hertzienne et d'un réseau téléphonique public. Quand une panne survient dans un système de distribution multicanal local pouvant assurer la transmission haute vitesse sans fil de signaux d'images, de données et téléphoniques, et qu'elle perturbe le fonctionnement d'une liaison sans fil entre une station de base et les coffrets d'abonné, les coffrets d'abonné sont raccordés au réseau téléphonique public au moyen d'une ligne de contournement. Quand une panne touche un câble (coaxial et/ou optique : RTCP) raccordant une station de tête de ligne à une station de base, la station de tête de ligne (station nodale) et la station de base sont raccordées à la liaison hertzienne, qui est une seconde ligne de contournement.

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