Virtual private switched telecommunications network
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United States of America Patent
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-
N/A
Issued Date -
Feb 3, 2005
app pub date -
Jul 23, 2003
filing date -
Jul 23, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A system and method to provide secure communication across the untrusted public switched telephone network includes a set of rules in a security policy which are implemented by a virtual private switched telecommunications network (VPSTN). The VPSTN provides for intercepting voice calls and modifying their set-up to include a request for bearer capability to support a data call.
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