The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2005
Filed:
Aug. 27, 2003
Applicants:
Greg Schmid, San Antonio, TX (US);
Kirk E. Smith, San Antonio, TX (US);
Keith S. Pickens, San Antonio, TX (US);
Craig Heilmann, San Antonio, TX (US);
Inventors:
Greg Schmid, San Antonio, TX (US);
Kirk E. Smith, San Antonio, TX (US);
Keith S. Pickens, San Antonio, TX (US);
Craig Heilmann, San Antonio, TX (US);
Assignee:
Securelogix Corporation, San Antonio, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M003/00 ;
U.S. Cl.
CPC ...
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.