Digital communication system

Multiplex communications – Wide area network – Packet switching

Patent

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Details

3701101, 370112, H04J 322

Patent

active

055197027

ABSTRACT:
A digital communication system between different communication networks having different data transfer mode respectively is provided. In a base station of a mobile radio communication network uses four data channels whose data transfer speed is 32 kbps. The base station is connected to a switching center for communication with a public fixed communication network by an ISDN subscriber's line which has a basic rate access interface capability of carrying 2B+D data. Four channels of data having a data transfer speed 32 kbps from the mobile radio communication network are multiplexed into two channels of data having a data transfer speed 64 kbps to be carried by the 2B+D of the ISDN basic rate access interface. On the other hand, two channels of data having a data transfer speed 64 kbps carried by the ISDN basic rate access interface from the public fixed communication network are demultiplexed into four channels of data having a data transfer speed 32 kbps to be transferred to the mobile radio communication network.

REFERENCES:
patent: 4805165 (1989-02-01), Kawamura et al.
patent: 5086424 (1992-02-01), Motohashi et al.
patent: 5287350 (1994-02-01), Ito et al.
patent: 5301190 (1994-04-01), Tsukuda et al.

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