Interface circuit for a telephone system

Details Interface circuit for a telephone system Interface circuit for a telephone system

1982-06-21

1984-11-20

Brown, Thomas W.

179 27D, H04M 354, H04Q 364

Patent

active

044840314

ABSTRACT:
A telephone communication system (10) utilizes a computer controlled PABX (12) which connects telephone trunk lines (13) to a voice response computer (50). The PABX (12) includes an automatic call distribution unit (12a) which provides selected call control and monitoring features. The ACD unit (12a), however, works only into digital control telephone lines while the voice response computer (50) works only with conventional two-wire telephone lines. Incoming telephone calls are transmitted through the trunk lines (13) to the automatic call distribution unit (12a). These calls are routed through a digital control telephone line (18) to a telephone set (24). A register (34) together with a make busy circuit (38) operate the telephone set (24) when one of the telephone lines (40) is available. If one of the lines (40) is available, a call from the PABX (12) through line (18) is received by the telephone set (24), transferred to the PABX (12), an auto-dial is generated by the set (24) and the transfer is completed. The incoming call is transferred to one of the lines (40) which is compatible with the inputs to the voice response computer (50). The register (34) serves to control each of the functions of the telephone set (24) in receiving, transferring, dialing and completing transfer of the incoming calls.

REFERENCES:
patent: 3614328 (1971-10-01), McNaughton et al.
patent: 3963875 (1976-06-01), Gueldenpfennig
patent: 4256928 (1981-03-01), Lesea et al.
patent: 4289934 (1981-09-01), Pitroda et al.
patent: 4400587 (1983-08-01), Taylor et al.
patent: 4408100 (1983-10-01), Pritz et al.
"Automatic Call Diversion Option for Hasler SKW 10000/10000 PABXs", D. Eglo and H. R. Hofmann, Hasler Rev., vol. 13, No. 3/4, (Winter 1980), pp. 63-67.

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