Circuitry for connecting multistage coupling fields and intermed

Details Circuitry for connecting multistage coupling fields and intermed Circuitry for connecting multistage coupling fields and intermed

1988-01-28

1989-05-23

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3408258, H04Q 1104

Patent

active

048336696

ABSTRACT:
Coupling circuitry for multistage coupling fields in telecommunications networks, especially time-multiplex telephone switching systems, with switching matrices and intermediate lines that connect them from coupling stage to coupling stage.
The multistage coupling field has intermediate-line wiring wherein a number of intermediate lines extends in parallel in a group of intermediate lines from every switching matrix in the first coupling stage to every switching matrix in the second coupling stage, the number being large enough to prevent interior blockage even while multichannel connections are being established. The number of switching matrices in the second coupling stage is for this purpose one more than double the quotient, rounded off to a whole number, of the difference between the connecting lines connected to the input end of one switching matrix in the first coupling stage and the maximum number of connecting lines or intermediate lines to be seized per multichannel connection and the difference between the number of intermediate line per group of intermediate lines increased by one and the maximum number of connecting lines or intermediate lines to be seized per multichannel connection.

REFERENCES:
patent: 3674938 (1972-07-01), Jacob
patent: 4467471 (1984-08-01), Troost
patent: 4587649 (1986-05-01), Maddern
patent: 4654842 (1987-03-01), Coraluppi et al.

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