Protection control unit for a TDM system

Details Protection control unit for a TDM system Protection control unit for a TDM system

1979-06-01

1981-05-05

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 16, 371 24, H04J 314

Patent

active

042662931

ABSTRACT:
A digital multiplexing system including first and second multiplexers, each connected to a plurality of multi-timeslot digital data buses for multiplexing digital data on said plurality of buses to first and second buses, respectively, thereby forming first and second serial bit streams. Protection control apparatus is included for comparing the corresponding bits of said first and second serial bit streams and for generating an alarm signal when a mismatch occurs between the comparison of said first and second bit streams within a predetermined period of time.

REFERENCES:
patent: 4037054 (1977-07-01), Neufang
patent: 4064369 (1977-12-01), Battocletti
patent: 4071700 (1978-01-01), Huffman et al.
patent: 4156110 (1979-05-01), Keeney et al.

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