Network interface unit remote test pattern generation
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United States of America Patent
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-
Sep 3, 1996
Issued Date -
N/A
app pub date -
May 26, 1995
filing date -
Mar 11, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for isolating the direction of communication errors in the local loop of a digital data network is described. A Network Interface Unit (NIU) located at the customer premises typically has a loopback feature, allowing for Bit Error Rate Tests (BERT) to be performed on the local loop from a remote test system located on the data network. The NIU loopback test isolates transmission problems at the customer premises from problems on the local loop. The present invention adds test pattern generation capability to the NIU, allowing the remote test system to determine whether the transmission problem on the local loop is in the network to customer premises direction or in the customer premises to network direction.
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