Switch User's Manual

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Optical Carrier-level 3 concatenation (OC-3c/STM-1)

An optical fiber transmission system that

carries Synchronous Transport Signal

(STS)-3c/Synchronous Transport Module

(STM)-1 frame structures at 155 Mbit/s.

Concatenation means only one logical data

stream (rather than supporting a channelized

structure) exists.

Optical Carrier-level 12 concatenation (OC-12c/STM-4)

An optical fiber transmission system that carries

STS-12c/STM-4 frame structures at 622 Mbit/s.

Concatenation means only one logical data

stream (rather than supporting a channelized

structure) exists.

Optical Time Domain Reflectometer (OTDR)

Device used to inspect optical fiber links by

sending optical pulses down the link and

monitoring the light reflected back to the device.

Can calculate overall fiber attenuation and

highlight points of loss or breaks in the fiber.

out of band (OOB)

The capacity to deliver information using a

modem or other asynchronous connection.

Nortel Ethernet Routing Switch 8600

Terminology

NN46205-102 01.01 Standard

30 May 2008