Circuit Pack Descriptions
Issue 8.0 July 2002
7-109
The board controller on the OC48 REGENR circuit pack detects hardware and
software faults on the circuit pack. When a fault occurs, the board controller is
reset and the FAULT LED on the circuit pack is continuously lighted. If an
incoming OC-48 signal fails, the FAULT LED will flash on and off.
General Description of Operation 7
The OC48 REGENR circuit pack accepts the incoming OC-48 signal (2.5 Gb/s)
and converts it to an electrical STS-48 signal. The STS-48 signal is descrambled
and demultiplexed into sixteen 155.52 Mb/s signals. (In a future release, the
SONET section overhead bytes are extracted.) The sixteen 155.52 Mb/s signals
are then frame-synchronized and multiplexed back into an STS-48 signal (2.488
Gb/s). The electrical STS-48 signal is then converted to an optical OC-48 signal
for transmission over a single-mode fiber.
The OC48 REGENR circuit pack is available in the standard 1.3 µm, high
performance 1.3 µm,andstandard1.5µm options.
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