Data link access unit for T1 spans supporting the extended superframe format (ESF)
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
Mar 16, 1994
filing date -
Mar 16, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data link access unit for insertion into a T1 span supporting the extended superframe (ESF) format includes an interface for accessing the frames of digital data carried by the T1 span in ESF format (including the data link bits) and calculating performance monitoring data for the T1 span. The interface is controlled by a processor that can access this performance monitoring data and also communicate message data over the data link channel via the interface. Additionally, the unit can provide an ESF/SF interface when inserted into a T1 span between a first channel bank supporting ESF and a second channel bank that does not support ESF.
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