Fast last digit detection of a dialed telephone number

Details Fast last digit detection of a dialed telephone number Fast last digit detection of a dialed telephone number

1993-07-16

1995-06-06

Dwyer, James L.

Telephonic communications

Centralized switching system

Switching controlled in response to called station...

379286, 379386, H04M 306

Patent

active

054229456

ABSTRACT:
A method and system for efficiently recognizing the last digit of a computer-dialed DTMF telephone number. The actual gaps between a number of first-dialed successive digits are compared with a standard gap exhibited during computer dialing to determine whether the dialing in progress is manual or automatic. As dialing proceeds, the absence of a digit for a preset time indicates that dialing has been completed. The preset time is set to a small value if it is determined that computer dialing is in progress.

REFERENCES:
patent: 4658096 (1987-04-01), West, Jr. et al.
patent: 4922517 (1990-05-01), West, Jr. et al.
patent: 5046085 (1991-09-01), Godsey et al.
patent: 5091877 (1992-02-01), Itoh et al.

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