Telephone message timing system

Details Telephone message timing system Telephone message timing system

1974-10-21

1976-01-20

Claffy, Kathleen H.

H04M 1518

Patent

active

039340902

ABSTRACT:
A timing arrangement for use with a telephone switching system equipped with automatic message accounting equipment to adjust call charging times to compensate for delays in obtaining access to the automatic message accounting equipment. Timing circuitry provided in an automatic message accounting recorder measures the period of time since the recorder was last idle with no call carrying trunks of the switching system waiting to be serviced by the recorder. Apparatus enabled by the timing circuitry generates an allowance time used to adjust a registered trunk call charging time in accordance with the trunk access delay to the automatic message accounting equipment.

REFERENCES:
patent: 2599358 (1952-06-01), Cahill et al.
patent: 3551599 (1970-12-01), White
patent: 3806652 (1974-04-01), Woolf et al.
patent: 3812293 (1974-05-01), Padgett

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