Plural terminals communication controlling system

Details Plural terminals communication controlling system Plural terminals communication controlling system

1988-12-28

1990-06-26

Brown, Thomas W.

Telephonic communications

Special services

Reserved call

379 93, 379100, H04M 164, H04M 1100

Patent

active

049378570

ABSTRACT:
A plurality of communication terminals are coupled to one telephone line via a plural terminals communication controlling system having circuits for detecting on-hook/off-hook of the communication terminals and a time supervising circuit. In the case where a transmission side has no selection signal transmission function, a first communication terminal is called by the transmission side. Even if this first communication terminal is a telephone set and there is no response because of the absence of a called party, a second communication terminal is called after a predetermined period of time, so that a desired communication is established between the transmission side and the second communication terminal by using a facsimile as the second communication terminal.

REFERENCES:
patent: 4677660 (1987-06-01), Yoshida
patent: 4794637 (1988-12-01), Hashimoto

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