Method and system for receiving data on a portable device

Telecommunications – Radiotelephone system – Auxiliary data signaling

Reexamination Certificate

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C455S153200, C455S152100, C455S502000, C455S519000, C455S066100, C455S414100, C455S412200, C455S427000, C455S435100, C370S468000, C370S329000, C370S437000, C370S333000, C370S469000, C379S067100

Reexamination Certificate

active

07962159

ABSTRACT:
disclosed are a method of and a system for receiving data on a portable device. The method comprises the steps of providing a portable device having a data modem with active and dormant stages, and a short message service (SMS) capability; receiving a pre-defined SMS message and in response thereto, switching said data modem from said dormant stage to said active stage; and thereafter, receiving data through said data modem. The preferred embodiment of the invention uses a cellular PDA type device that can receive phone calls and Short Message Service (SMS) type messages even when the data modem of the PDA is not engaged. In this preferred embodiment, a special SMS message is sent from a back-end server infrastructure of a computer network to the PDA device to tell that device to “wake up” and connect to the network.

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