Method for automatic wireless replenishment using DTMF

Details Method for automatic wireless replenishment using DTMF Method for automatic wireless replenishment using DTMF

2007-12-25

2007-12-25

Mehrpour, Naghmeh (Department: 2617)

Telecommunications

Radiotelephone system

Usage measurement

C379S114030, C340S426200

Reexamination Certificate

active

10059642

ABSTRACT:
The invention provides a method for replenishing call-use authorization to a mobile vehicle. A call-use authorization request is received from a user. User credit availability information is determined. A replenishment amount request is received from the user. Call-use authorization data is updated based on the credit availability information and the replenishment amount request. The updated call-use authorization data is sent to an in-vehicle communication device by using a dual-tone multiple frequency protocol.

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patent: 2001/0034245 (2001-10-01), Swartz
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patent: 2002/0119800 (2002-08-01), Jaggers et al.
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patent: 2003/0096641 (2003-05-01), Odinak
patent: 2003/0119478 (2003-06-01), Nagy et al.
patent: 2003/0157929 (2003-08-01), Janssen et al.

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