Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission
Reexamination Certificate
2004-12-09
2008-10-14
Tran, Quoc D (Department: 2614)
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Of data transmission
C379S022020, C379S024000, C379S030000
Reexamination Certificate
active
07436935
ABSTRACT:
A system for qualifying subscriber lines in a telephony system for high speed data services. The system includes a measurement unit that makes one ended electrical measurements on the subscriber lines. Measurements on the subscriber lines are used to predict which of the lines can carry signals used in high speed data services. The predictions are used in marketing select data transmission services.
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Tollgrade Communications, Inc.
Tran Quoc D
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