Multiplex communications – Wide area network – Packet switching
Patent
1987-02-26
1988-11-22
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
3701101, H04L 700
Patent
active
047870842
ABSTRACT:
An apparatus for converting a frame code from a T-1 multiplexed data stream having a framing pattern in a first preselected format such as DMA-1, to a frame code in an output data stream having a framing pattern according to a second preselected format such as D2/D4. A data path is connected to receive the data stream for supplying the output data stream. Framing windows in the data stream are identified and modified by combining with a selected frame code modifier. The output data stream is then supplied to a T-1 receiver circuit adapted to the second preselected format.
REFERENCES:
patent: 3261921 (1966-07-01), Hakim et al.
patent: 4002846 (1977-01-01), Barbier
patent: 4468767 (1984-08-01), Warren et al.
patent: 4658152 (1987-04-01), Walters
patent: 4674087 (1987-06-01), Green et al.
patent: 4730346 (1988-03-01), Jiang
Amdahl Corporation
Marcelo Melvin
Olms Douglas W.
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