System for controlling multiple line cards on a TDM bus

Details System for controlling multiple line cards on a TDM bus System for controlling multiple line cards on a TDM bus

1989-12-15

1992-04-14

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 851, H04J 302

Patent

active

051054213

ABSTRACT:
In a TDM telecommunications terminal, wherein multiple line cards are connected to a TDM bus, each line card location is provided with an identification code. A processor controlled circuit generates a programmable sequence of identification codes which are transmitted on a configuration bus in time slots synchronized with the time slots of the TDM bus. The configuration bus is connected to each of the line cards, which include a comparator logic circuit for comparing the identification of the line card location to the identification codes provided on the configuration bus. When a match is detected, the line card is enabled and is given access to the TDM bus. Through the programmable reassignment of time slots to line cards, concentration may be provided by the system, and a plurality of time slots may be assigned to a single line card to provide broad band service.

REFERENCES:
patent: 4370743 (1983-01-01), Moran
patent: 4385379 (1983-05-01), Kelly et al.
patent: 4891805 (1990-01-01), Fallin
patent: 4953159 (1990-08-01), Hayden et al.
patent: 4998249 (1991-03-01), Bennett et al.

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