An improved virtual private switched telecommunications network

Details An improved virtual private switched telecommunications network An improved virtual private switched telecommunications network

H - Electricity

04

M

H04M 1/68 (2006.01) H04L 12/22 (2006.01) H04L 29/06 (2006.01) H04M 7/00 (2006.01) H04M 11/00 (2006.01) H04M 3/22 (2006.01)

Patent

CA 2438976

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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