Automatic pause generator for dialers

Details Automatic pause generator for dialers Automatic pause generator for dialers

1980-10-01

1982-08-03

Brigance, Gerald L.

H04M 1274

Patent

active

043428827

ABSTRACT:
An automatic dialing pause generator for use in telephone terminals with pulse dialing and additional features such as abbreviated number dialing, redialing, direct dialing and the like automatically provides a pause between selected digits dialed by the telephone terminal. Specifically, the present invention inserts a pause automatically after transmitting a directory number having an exchange code number. Memory write-in logic monitors the dialing input from a keyboard and from a keyboard decoder for the entering of an exchange code number to be stored in an exchange code memory. In addition, the memory write-in logic also recognizes the entering of a dialing command from keyboard and keyboard decoder as normal or abbreviated number dialing and stores it in a directory number memory which controls the dialing through a digit and pause generator. Simultaneously with the transmission of the first digit from the directory number memory, the transmitted number is checked for correspondence with one of the directory numbers previously stored in the exchange code number memory by a comparator circuit. When the transmitted digit and the exchange code number correspond, a pause criterion is produced after this digit by the directory number memory and the digit and pause generator creates a pause in transmission. During the pause, the speech circuit is connected to the loop and transmission of the next digit is prevented.

REFERENCES:
patent: 3553382 (1971-01-01), Knox et al.
patent: 3784757 (1974-01-01), Woolf et al.
patent: 3932709 (1976-01-01), Hoff et al.
patent: 4053718 (1977-10-01), Derveaux

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