Cellular radiotelephone with dialed number analysis

Details Cellular radiotelephone with dialed number analysis Cellular radiotelephone with dialed number analysis

1996-05-02

2000-02-01

Bost, Dwayne D.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

H04Q 732

Patent

active

060213353

ABSTRACT:
A radiotelephone (10) simulates the call origination process performed by land-line telephones. Dial tone is generated (78) in response to an off-hook condition and removed when a first digit (54) is dialed. A timer process (84, 110) and a number analysis process (100) simultaneously evaluate dialed digits to detect the completion of dialing. The number analysis process (100) identifies seven, ten, and eleven digit, and indeterminate length phone number formats (64, 66, 52, 68). The ten digit format is recognized in response to remotely programmed (42) connected NPA codes. For most calls, the number analysis process (100) instantly detects a phone number's final digit (62). In a few cases the timer process (84, 110) detects the final digit through the absence of dialing activity for a predetermined duration. When the final digit (62) is detected, an origination message is transmitted to a cellular network.

REFERENCES:
patent: 4775997 (1988-10-01), West, Jr. et al.
patent: 5046085 (1991-09-01), Godsey et al.
patent: 5247565 (1993-09-01), Joglekar et al.
patent: 5274693 (1993-12-01), Waldman
patent: 5305372 (1994-04-01), Tomiyori
patent: 5509056 (1996-04-01), Ericsson et al.
patent: 5535260 (1996-07-01), Zicker et al.

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