Violation control circuit in ISDN

Details Violation control circuit in ISDN Violation control circuit in ISDN

1991-01-03

1993-04-27

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

371 56, H04L 2549

Patent

active

052068838

ABSTRACT:
The present invention discloses a violation control circuit for a frame alignment of a basic interface in ISDN. The violation control circuit comprises selectors having inputs connected to positive and negative pulse transmission signals, a selector control circuit for providing control signals for selectively connect the inputs of the selectors to outputs of the selectors. The violation control circuit further comprises a U-B converter for receiving the outputs of the selectors, a transmission transformer for receiving an outut of the U-B converter, a receiving transformer for receiving a receiving pulse, a B-U converter for receiving an output of the receiving transformer, and an INFO detecting circuit to be connected to an output of the B-U converter.

REFERENCES:
patent: 4408325 (1983-10-01), Grover
patent: 4962509 (1990-10-01), Itoh

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