Telephone message timing system

Details Telephone message timing system Telephone message timing system

1976-12-06

1977-11-15

Cooper, William C.

H04M 1518

Patent

active

040586804

ABSTRACT:
A timing arrangement for use with a telephone switching system having automatic message accounting equipment at a recording center to adjust apparent call duration times to compensate for delays caused by the temporary storage of call data at remote telephone offices. Cycling, counting apparatus is provided at each of the remote telephone offices to generate sequential time interval data representative of successive time intervals. Logic apparatus combines the time interval data with telephone office trunk random answer and disconnect event data to form a plurality of first data words in a buffer store. Transmitting apparatus responds to command of the recording center by transmitting a block of first data words from the buffer store followed by a final data word identifying the current time interval data to the recording center. At the recording center, a comparison of the time interval data in each received first data word with the final data word generates delay times utilized for adjusting the apparent time of day of the answer and disconnect events to compensate for delays encountered in transmitting the event data.

REFERENCES:
patent: 3551599 (1970-12-01), White
patent: 3573378 (1971-04-01), Leyburn et al.
patent: 3739097 (1973-06-01), Leyburn et al.
patent: 3806652 (1974-04-01), Woolf et al.
patent: 3812293 (1974-05-01), Padgett
patent: 3813495 (1974-05-01), Cowerly
patent: 3828135 (1974-08-01), Padgett
patent: 3934090 (1976-01-01), Curtis et al.
patent: 3982073 (1976-09-01), Baltzer et al.

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