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Michael D Walter, Mark R Grundtisch: Method and apparatus for testing communication systems. TII Computer Systems, Pennie & Edmonds, September 9, 1986: US04611101 (21 worldwide citation)

A microcomputer controlled apparatus and method for testing communication lines including circuits serving multiple functions in the measurements of line electrical and noise characteristics. A current divider, an analog to digital converter, a constant current source, various filters and an RMS-to- ...


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Helwig Arthur Paul, Satar Glen Eugene: Method and apparatus for testing communication systems using recorded test message frames. Motorola, June 26, 1996: EP0719000-A1 (3 worldwide citation)

A communication system (10) includes a duplex digital communication node (14) and a half-duplex digital communication node (12). The half-duplex node (12) is configured to perform duplex testing. The half-duplex node (12) digitizes a test message (74), vocodes the test message (76), possibly encrypt ...


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Walker Michael D, Grundtisch Mark R: Methode et appareil de verification de systemes de communication, Method and apparatus for testing communication systems. Tii Computer Systems, OSLER HOSKIN & HARCOURT, November 29, 1988: CA1245739

ABSTRACT METHOD AND APPARATUS FORTESTING COMMUNICATION SYSTEMS A microcomputer controlled apparatus and methodfor testing communication lines including circuits servingmultiple functions in the measurements of line electricaland noise characteristics. A current divider, an analogto digital converter ...


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Walker Michael D, Grundtisch Mark R: Method and apparatus for testing communication systems. Tii Computer Systems, MORRIS Francis E, March 13, 1986: WO/1986/001663

A microcomputer controlled apparatus (6) and method for testing communication lines including circuits serving multiple functions in the measurement of line electrical and noise characteristics. A current divider (370), an analog to digital converter (400), a constant current source (380), various f ...


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