Apparatus for the direct connection of ancillary equipment to a

Details Apparatus for the direct connection of ancillary equipment to a Apparatus for the direct connection of ancillary equipment to a

1976-05-24

1977-10-25

Robinson, Thomas A.

Telegraphy

Systems

Printing

178 2R, 179 2DP, H04M 100, H04M 900

Patent

active

040557294

ABSTRACT:
Ancillary equipment including a facsimile transceiver is directly connected to a telephone network through a coupling arrangement. The coupling arrangement includes a transfer relay for transferring the primary communication path to the telephone network between a telephone station set and the ancillary equipment. The transfer between the telephone station set and the ancillary equipment is controlled by a sensor which electrically senses a change from the off-hook to the on-hook state of the telephone set. The transfer is also controlled in response to the state of the ancillary equipment. The coupling arrangement also limits the signal power level coupled into the telephone network from the ancillary equipment.

REFERENCES:
patent: 3475557 (1969-10-01), Morse et al.
patent: 3822364 (1974-07-01), Lee
patent: 3876837 (1975-04-01), Gormley et al.
patent: 3962546 (1976-06-01), Hashimoto

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