Resumes
Resumes
Mark Grundtisch Phones & Addresses
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Palmyra, NY
Publications
Us Patents
Method And Apparatus For Testing Communication Systems
View pageUS Patent:
46111018, Sep 9, 1986
Filed:
Aug 29, 1984
Appl. No.:
6/645479
Inventors:
Michael D. Walter - Webster NY
Mark R. Grundtisch - Rochester NY
Mark R. Grundtisch - Rochester NY
Assignee:
TII Computer Systems, Inc. - Copiague NY
International Classification:
H04B 346
US Classification:
1791753R
Abstract:
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-DC converter are used to perform A. C. and D. C. voltage and current measurements, resistance measurement and noise measurement. Capacitance measurement circuits and method utilize a buffer for isolating the capacitance on the wire measured from other capacitance sources.
Apparatus For Selectively Alerting Party Line Subscribers
View pageUS Patent:
47232714, Feb 2, 1988
Filed:
Oct 15, 1985
Appl. No.:
6/787286
Inventors:
Mark R. Grundtisch - Rochester NY
Assignee:
TII Computer Systems, Inc. - Copiague NY
International Classification:
H04M 1300
US Classification:
379181
Abstract:
An apparatus is described having the capability to selectively alert subscribers in a telephone party line system where different subscriber parties are alerted using different ringing configurations. Subscribers are identified as being a member of a party by the connection pattern used to interface the apparatus to the telephone party line. The apparatus comprises means for detecting whether a ringer signal received from the telephone line is meant to alert a given subscriber party, and means for coupling the ringer signal to subscriber alerting equipment when an appropriate ringer signal is detected.