International roaming service for permitting a...

Details International roaming service for permitting a... International roaming service for permitting a...

2007-01-16

2007-01-16

Gelin, Jean (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S432200, C455S435100, C455S552100

Reexamination Certificate

active

10871289

ABSTRACT:
A cellular/wireless foreign subscriber is enabled to use her/his own cellular/wireless telephone instrument in a local cellular/wireless (C/W) network/system by entry of a code and a PIN into the local network/system desired to be used. The local C/W network/system algorithmically responds to the code and PIN by changing characteristics of the radio equipment of the local C/W network/system to accommodate operation of the subscriber's cellular/wireless telephone instrument with the network/system desired to be used.

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