Patent
1976-04-12
1977-07-26
Robinson, Thomas A.
H04Q 360
Patent
active
040384985
ABSTRACT:
A telephone subscriber system in which a concentrating portion of the central office telephone switching network is remotely located and connects to the remainder of the switching network at the central office via concentrated voice transmission paths and via multichannel data links which forward control and status signals between the two portions of the switching network.
REFERENCES:
patent: 3022382 (1962-02-01), Ewin
patent: 3123674 (1964-03-01), Brooks et al.
patent: 3217109 (1965-11-01), Abert
patent: 3389229 (1968-06-01), Torisu
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