Virtual private switched telecommunications network

Details Virtual private switched telecommunications network Virtual private switched telecommunications network

2005-04-12

2005-04-12

Bui, Bing Q. (Department: 2642)

Telephonic communications

Call or terminal access alarm or control

Fraud or improper use mitigating or indication

C379S199000, C379S200000

Reexamination Certificate

active

06879671

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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Biodata, Babylon Standard, 4 pages.

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