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:
Oct. 09, 2001
Filed:
Aug. 04, 1998
Applicant:
Inventor:
Cliff Sui, Berkeley Heights, NJ (US);
Assignee:
Avaya Technology Corp., Basking Ridge, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/42 ;
U.S. Cl.
CPC ...
H04M 3/42 ;
Abstract
A touch-tone receiver (TTR) simulator is disclosed to analyze DTMF signals and facilitate the investigation of call failure problems. The TTR simulator captures DTMF data received by a private branch exchange (PBX) switch and utilizes the instruction set of the TTR being simulated to process the received DTMF signals on the simulated TTR. Diagnostic tools allow step-by-step tracing and recording of the instructions performed by the simulator. The TTR simulator allows the underlying cause of a call failure problem due to DTMF signals to be identified. Results of digit interpretation can be compared to expected results.