Method to reduce modem call establishment time to a...

Details Method to reduce modem call establishment time to a... Method to reduce modem call establishment time to a...

2007-12-18

2007-12-18

Nguyen, Duc M. (Department: 2618)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S414100, C455S099000, C379S026010, C701S207000

Reexamination Certificate

active

11037708

ABSTRACT:
A method for recognizing an attempted data connection in a wireless network between a telematics unit and a call center using a modem. During the connection attempt, a determination is made whether frequencies received through the modem are audio frequencies or data frequencies. The connection is abandoned prior to a time-out if frequencies received through the modem are audio frequencies.

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patent: 2004/0137960 (2004-07-01), Chung
patent: 2005/0065779 (2005-03-01), Odinak

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