Multiplex communications – Wide area network – Packet switching
Patent
1992-03-09
1994-02-15
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 161, 3701001, H04J 110
Patent
active
052875130
ABSTRACT:
A data transmission system in which multiplex data is created in accordance with the Synchronous Digital Hierarchy standard includes an add-drop multiplex having a switch across which data streams are switched between a pair of multiplexers and each input and output for a stream has a rejustifier circuit the timing of which is extracted from a timing extract from the other side of the switch.
REFERENCES:
patent: 4468767 (1984-08-01), Warren et al.
patent: 4935920 (1990-06-01), Taniguchi et al.
patent: 5018135 (1991-05-01), Ashi et al.
patent: 5033044 (1991-07-01), Williams et al.
GPT Limited
Hom Shick
Olms Douglas W.
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