Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-07-18
2006-07-18
Cumming, William D. (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
Reexamination Certificate
active
07079849
ABSTRACT:
A Roaming Solution network system may include a Roaming Server, a National Location Register, and an 800 number Remote Switching Unit. The system is integrated with a standard SS7 type telecommunications network and further coupled to an account based billing and call control platform that allows registered wireless credit limited subscribers to place and receive calls when roaming outside of their Home Provider's network. The system verifies that the wireless subscriber's account balance is sufficient to place or receive the call, translates the account balance into talk minutes, and monitors the call for talk duration. The Roaming Solution network system is further operable such that if the wireless subscriber exceeds the available account balance, the system tears down the call in the first negative minute and immediately decrements the wireless subscriber's account. If the call is disconnected prior to the account balance being depleted, the system immediately decrements the wireless subscriber's account and releases the trunks. This Roaming Solution network system is designed to mitigate a Home Provider's exposure to credit risk when providing roaming services to credit limited subscribers.
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Cumming William D.
Kenyon & Kenyon LLP
Verisign, Inc.
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