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:
Feb. 11, 2003
Filed:
Aug. 29, 2000
Dean Paul Vanden Heuvel, Chandler, AZ (US);
Scott David Blanchard, Mesa, AZ (US);
General Dynamics Decision Systems, Inc., Scottsdale, AZ (US);
Abstract
An interworking unit ( ) for providing an interface between a digital communication network ( ) and a public switched telephone network (PSTN) ( ) includes a de-vocoder ( ), a protocol termination unit ( ), and a signal combiner ( ) for processing signals being transferred from the digital network ( ) to the PSTN ( ). A digital communication signal received by the interworking unit ( ) from the digital network ( ) is processed by both the de-vocoder ( ) and the protocol termination unit ( ). The outputs of the de-vocoder ( ) and the protocol termination unit ( ) are then combined into a uniquely formatted signal that is then delivered into the PSTN ( ). Similar functionality is also provided for processing signals in the reverse direction. The interworking unit is capable of processing signals traversing the interface between the networks ( ) without a priori knowledge of the signal type being processed.