Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2003-12-22
2008-03-18
Kincaid, Lester G. (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C370S353000, C370S315000, C455S445000, C455S426100, C455S456500
Reexamination Certificate
active
07346348
ABSTRACT:
The present invention is directed to a system and method for providing improved wireless services in a GPRS network operating in network operation mode1. In an embodiment of the present invention, a MS attempts a combined attach. If the combined attach is not accepted by the network, the MS repeats the attempt. If the combined attach is not accepted by the end of the second attempt, the MS attempts to gain access only to GSM services. Once the MS gains access to the GSM services, the MS may attempt the combined attach while connected to GSM network.
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Carvalho John
Gazzard Daryl
AT&T Mobility II LLC
Davis , Wright, Tremaine, LLP
Donohue Michael J.
Herrera Diego
Kincaid Lester G.
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