Direct station selection hold arrangement

Details Direct station selection hold arrangement Direct station selection hold arrangement

1975-11-03

1977-01-04

Cooper, William C.

H04M 100

Patent

active

040015173

ABSTRACT:
A key telephone system is disclosed in which a direct station selection (DSS) arrangement reduces the number of operations required for the attendant to extend an incoming central office call to a station. The operation of one or more DSS keys on any of the attendant consoles in the key telephone system automatically places the calling central office line on hold and establishes a communication path through the DSS key contacts from the attendant to the selected station. DC bias on this communication path activates a loudspeaker and microphone arrangement in the selected station so the called party may converse with the attendant "hands-free." Additionally, the DSS arrangement provides the capability of utilizing any station in the key telephone system as the attendant position.

REFERENCES:
patent: 3395255 (1968-07-01), Clement
patent: 3553386 (1971-01-01), Golembeski
patent: 3787640 (1974-01-01), Bush et al.
patent: 3860756 (1975-01-01), Shinoi et al.
patent: 3872262 (1975-03-01), Kerman
patent: 3898392 (1975-08-01), Jackson
patent: 3927278 (1975-12-01), Tsutsumi et al.
patent: 3928732 (1975-12-01), Simon et al.

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