Multiplex communications – Wide area network – Packet switching
Patent
1990-07-02
1991-09-03
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 56, 370 68, 370 681, H04J 312
Patent
active
050460676
ABSTRACT:
A digital transmission system which serves a multiplicity of subscribers by a multiplicity of channel units. Each channel unit serves up to two subscribers. At each end of the system, there is included a signaling processing unit (SPU) which provides both time slot interchanging and change in format for the signaling information. At each end of the system, there is another unit (TRU) which provides time slot interchanging for the nonsupervisory information for each subscriber. The channel units are arranged in channel banks for four groups of units each. Each channel bank is connected to the SPU by two single lines over one of which all the supervisory (signaling, provisioning and testing) information for the units in the bank is transmitted and over the other of which all the supervisory information from the units is transmitted. The TRU is connected to each group in the bank by a pair of lines.
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Hsu Alpus H.
Olms Douglas W.
Reliance Comm/Tec Corporation
Rickin Michael M.
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