Restricted access telephones for logical telephone networks
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United States of America Patent
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Apr 28, 1998
Grant Date -
N/A
app pub date -
Jul 24, 1996
filing date -
Jul 24, 1996
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A logical network is defined by a plurality of restricted class telephones in which such telephones incorporate a network access code characterizing the logical network. Each telephone contains a verification device that allows each telephone of such logical network to verify that others of such telephones are members of that logical network by transmission and receipt of a network access code. The logical network is useable on any telephone system, including public telephone service networks, cellular telephone systems and radio telephone systems. The verification device may be installed as a retroactive addition to the standard components found within existing cellular telephones or may be included as part of the technical design in new cellular telephones.
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