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Home › IP voice call surveillance through use of non-dedicated IP phone with signal alert provided to indicate content of incoming call prior to an answer as being a monitored call

IP voice call surveillance through use of non-dedicated IP phone with signal alert provided to indicate content of incoming call prior to an answer as being a monitored call

US Patent 7428233 · Granted Sep 23, 2008

Estimated economic value: $194,494,000 ⓘ

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