FIELD: telephone communications.
SUBSTANCE: novelty is introduction of switching hardware complexes and subscriber concentration modules in digital switching system; introduced in transit switching module are terminal station sets, group connection units, central processor, control channel matching unit, fully accessible jackfield, and synchronizing system; each group connection unit has in addition first sync signal receiver, second call processing unit, first synchronization switching unit, control channel unit, and central control channel shaping unit.
EFFECT: enlarged functional capabilities and enhanced capacity of digital switching system.
4 cl, 5 dwg
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