Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-06-28
2005-06-28
Trost, William (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S433000, C455S435100, C455S435200, C455S555000, C379S225000, C379S229000, C379S231000
Reexamination Certificate
active
06912388
ABSTRACT:
Providing a roaming service among private mobile switching centers (MSCs) interconnected to one another via a public switched telephone network (PSTN) includes connecting the private mobile switching centers to a virtual private network (VPN) via the PSTN; storing information about a mobile station registered for a private mobile communication service and associated mobile station location information in a selected private mobile switching center upon a mobile station sending a private mobile communication service registration request to the selected one of the private mobile switching centers; transmitting the mobile station information and the mobile station location information to other private mobile switching centers via the virtual private network; and the selected private mobile switching center the private mobile communication service using the stored mobile station information and mobile station location information upon the mobile station sending a private mobile communication service request to a selected one of the private mobile switching centers.
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Bushnell , Esq. Robert E.
Trost William
Zewdu Meless
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