Protocol analyzer pod for the ISDN U-interface
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United States of America Patent
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Nov 9, 1993
Grant Date -
N/A
app pub date -
Jun 27, 1991
filing date -
Jun 27, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A protocol analyzer pod for monitoring U-interface data streams in a communication system wherein full duplex U-interface line codes (such as AMI and 2B1Q) are used. The protocol analyzer pod is intrusively inserted (that is, inserted in series) in a U-interface line between a central office and a customer equipment. The protocol analyzer pod includes two cross-connected U-interface transceivers. According to the present invention, each end of the U-interface line is terminated into one of the U-interface transceivers. The two U-interface transceivers perform adaptive equalization and echo cancelling on their respective line segments. Also, the two U-interface transceivers separate the full duplex U-interface data stream on the U-interface line into separate input and output data streams. A protocol analyzer may monitor the full duplex U-interface data stream by monitoring the half duplex input and output data streams. It is understood that this technique could be used for line codes other than the AMI and 2B1Q discussed here.
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