H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/3, 379/57
H04M 7/00 (2006.01) H04J 3/12 (2006.01)
Patent
CA 1315904
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 inter- changing for the nonsupervisory information for each subscriber. The channel units are arranged in channel banks of 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 super- visory information from the units is transmitted. The TRU is connected to each group in the bank by a pair of lines.
592917
Marconi Intellectual Property (ringfence) Inc.
Ridout & Maybee Llp
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