Empirix Inc.

John David Doyle

Lawrence Joseph Smith

Peter Savage

Tibor F Ivanyi

David Hsing-Wang Wong

Ramesh H Vaswani

Mark Trumpler

Larry Apfelbaum

Monica Chandnani

Eduardo Joo

Feng Chen

Jason Neri

Luis Zamora

Thomas Lynch

A method, apparatus and computer program product for performing dynamic Voice Over Internet Protocol (VOIP) endpoint mapping is presented. At least one on net endpoint of a VOIP call is determined. An endpoint data structure is used to store, for each on net endpoint of the call, a key and at least one of an Internet Protocol (IP) address of the end point, a phone number associated with the endpoint, and/or a display name associated with the endpoint. The endpoint data structure is used to correlate call legs across a network. Heuristics of the VOIP call are determined, the heuristics including information relating to the main source call leg and the main destination call leg.

Dynamic voice over internet protocol endpoint mapping

A system and method for testing signals in digital-network packets includes generation of reference clips and associated reference key values and comparison of the reference key values with current key values associated with incoming current-digital-network packets under test In this way the incoming current-digital-network packets can be tested for either a correct audio and/or video signal or a signal with sufficiently high signal integrity to allow it to be understood by a user at a destination point.

System and method for testing signals within digital-network packets

The present invention provides a method to configure the hardware and software resources in a system to utilize two physical interface boards in pairs such that their aggregate units of voice processing DSP resources can be applied to either all of a T1 board's physical interfaces or all of an E1 board's physical interfaces. This allows a single telecommunications system to run as either T1 or E1 with no additional hardware required. The present invention also provides the ability to run protocols normally associated with T1 physical interfaces on a card with only E1 physical interfaces. A method for changing the configuration from T1 to E1 and from E1 to T1 is provided as well. Additionally, the method includes configuring the system to look like a single set of contiguous T1 or E1 channels. Additionally, the method allows for monitoring audio by switching the Pulse Code Modulated (PCM) audio streams from/to an audio enabled resource board and switching between listening to Mu-law encoded audio for T1 and A-law encoded audio for E1. The present invention also permits the system to be cabled as T1 and E1 at the same time.

Multi-interface telephony test system using separate interface cards

A method of using a computer to analyze an extended finite state machine model of a system includes providing a graphical user interface that presents a table of rows, receiving data in at least one table row, and determining at least one path through the states and transitions of the extended finite state machine model using at least one of the rows in the table.

Analyzing an extended finite state machine system model

Growing community of inventors

Hollis, NH, United States of America

John David Doyle