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Network operator-neutral provisioning of mobile devices
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Cipher key generation in communication system
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Emergency call handling in accordance with authentication procedure in communication network
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Systems and method for performing handovers, or key management while performing handovers in a wireless communication system
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Method and apparatus enabling PTT (push-to-talk) communications between legacy PSTN, cellular and wireless 3G terminals
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Providing internet users with presence information about telephone lines in the public switched telephone network
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