Telephone concentrator

Details Telephone concentrator Telephone concentrator

1976-11-11

1978-02-21

Robinson, Thomas A.

179 15AT, H04J 300, H04Q 360

Patent

active

040754324

ABSTRACT:
A concentrator for use in a PCM telephone network. The concentrator has conventional units such as line equipments, a space concentration network and a coder/decoder-PCM sampler and additionally includes a time cross-connection network and two different types of junctors, one type being a complete junctor and the other type (a simplified type) conducting only during the conversation part of a call. The concentrator therefore arranges firstly for a normal junctor to set a call up, then subsequently releases it, substituting it by a simplified junctor. This substitution causes a complementary modification of the time connection in the time connection network to keep the same connection channel with the exchange.

REFERENCES:
patent: 3676855 (1972-07-01), Tallegas
patent: 3825690 (1974-07-01), Kelly et al.

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