ADC CUDA 3 - Manual (Page 120)

ADC Telecommunications, Inc.
118 C HAPTER 7: P ACKET O VER SONET A DMINISTRATION
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Photonic Layer — Converts the electrical STS-n signal to an optical
signal, referred to as Optical Carrier. This OC-n signal is then
transmitted over the circuit.
Each layer consists of its own overhead bytes. This overhead provides the
powerful management and fault-tolerance capabilities inherent in a SONET
network.
SONET overhead also provides for various alarms and error messages —
known as defects — to be reported. Alarms allow for the reporting of
network failures; error messages report incomplete failures that may
compromise data transmission.
SONET interface administration on the Cuda 12000 includes:
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Displaying POS Interface Information
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Disabling and Enabling Interfaces
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Viewing POS Interface Packet Statistics
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Viewing SONET Line-Layer Information
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Viewing SONET Path Layer Information
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Viewing and Configuration Section Layer Administration
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Configuring and Viewing SONET Alarms