Universal answer arrangement for a PABX

Details Universal answer arrangement for a PABX Universal answer arrangement for a PABX

1974-11-04

1976-06-15

Cooper, William C.

179 18BE, H04M 354

Patent

active

039638758

ABSTRACT:
A universal answer arrangement for a PABX in which incoming trunk calls are automatically connected, when all operator positions are busy or unattended and equipped for universal answer service, to a pre-designated line circuit or, at night, to one or more selected operator position circuits. In response to the connection to an associated operator loop circuit, a programmable automatic dialing circuit transmits a programmable predetermined number to a local register which effects a switch-through from the incoming trunk to the designated line circuit. The operator loop circuit monitors the connection and releases from the call when the called line goes off hook. Advantageously, the night answer arrangement includes a PABX group hunting circuit which permits the incoming call to be connected to a second line circuit if the first line circuit is busy or to a tie line trunk to another PABX having a night attendant if all line circuits in the hunting group are busy or disabled.

REFERENCES:
patent: 3542961 (1970-11-01), Klein et al.
patent: 3673341 (1972-06-01), Finkhauser

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