Radio telecommunication apparatus capable of controlling call ch

Details Radio telecommunication apparatus capable of controlling call ch Radio telecommunication apparatus capable of controlling call ch

1990-07-06

1992-04-28

Dwyer, James L.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 60, 379 62, 379 90, 379 91, H04M 1100

Patent

active

051094010

ABSTRACT:
A radio telecommunication apparatus in which a telecommunication link is made between the user of the apparatus and a second party, a charge rate is obtained from a base station coupled to the apparatus, a first allowable call charge for one call is set, speech communication time in each call is counted to provide a count value, a current call charge is calculated based on the charge rate, the current call charge is compared with the first allowable call charge to determine whether the current call charge exceeds the first allowable call charge, and both the user of the apparatus and the second party are informed when the current call charge exceeds the first allowable call charge.

REFERENCES:
patent: 4122308 (1978-10-01), Weinberger et al.
patent: 4640986 (1987-02-01), Yotsutani et al.
patent: 4677653 (1987-06-01), Weiner et al.
patent: 4751728 (1988-06-01), Treat
patent: 4776000 (1988-10-01), Parienti
patent: 4777646 (1988-10-01), Harris
IBM Technical Disclosure Bulletin, vol. 30, #3, Aug. 1987, "Personal Transaction Card", p. 1262.
Matsuo, Shimohara, Matsui, Tokunaga, "Personal Telephone Services Using IC-Cards", IEEE C.M.

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