Circuit arrangement for injecting meter pulses for subscriber ta

Details Circuit arrangement for injecting meter pulses for subscriber ta Circuit arrangement for injecting meter pulses for subscriber ta

1987-08-14

1989-05-09

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

379124, H04J 312

Patent

active

048295175

ABSTRACT:
For subscriber termination circuits of a digital time multiplex telecommunications system comprised in a group, an injection circuit is provided, individual to a group. The injection circuit comprises a switch exhibiting a gradual change of state both in switching on and switching off for providing timing for meter pulses provided by a meter pulse generator. The meter pulses are applied to the individual subscriber termination lines in a multiplex manner by way of contacts as well as test relays already present.

REFERENCES:
patent: 3573378 (1968-04-01), Leyburn
patent: 3936608 (1976-02-01), Danielsen
patent: 4356352 (1982-10-01), Hilliges

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