Multiplex communications – Diagnostic testing – Of a repeater
Reexamination Certificate
2008-01-08
2008-01-08
Duong, Frank (Department: 2616)
Multiplex communications
Diagnostic testing
Of a repeater
C370S252000
Reexamination Certificate
active
07317689
ABSTRACT:
High-speed transceiver devices, such as GBIC-type transceivers, are accessed and addressed. Identification information (including manufacturer name, model, compliance codes) is placed in data fields of the transceivers. An algorithm checks each port in each module of a host system to determine if a transceiver is present. If a particular transceiver is present, then algorithms store the port address of the transceiver in memory and enable the transceiver to be read from or written to. Reading from the transceiver includes reading the identification information, and writing to the transceiver includes writing the identification information. If a transceiver is initially determined not to be present or if the reading/writing/enabling processes fail, then a recovery process determines if the transceiver was present the last time it was checked. If it was present the last time, then the process continues to try to recover the transceiver data—otherwise, the port is marked as empty.
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Duong Frank
Foundry Networks Inc.
Seed IP Law Group PLLC
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