| http://www.w3.org/ns/prov#value | - For instance, encryption/decryption algorithms may include any selected combination of such operations as rotation, mapping, addition, use of look-up tables, as well as other cryptography-related steps as would be appreciated by one of ordinary skill in the art. [0052] Referring to FIG. 5, a VoIP subscriber unit 10 as described above may be connected in a communications system in which, at the sub
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