Preface

This preface explains the purpose, intended audience, organization, and conventions for the
Cisco ONS 15540 ESP TL1 Command Reference, and it provides information on how to obtain related documentation.

Purpose

This publication explains the use of TL1 (Transaction Language 1) for the Cisco ONS 15540 ESP. Use this guide in conjunction with the appropriate publications listed in the "Related Documentation" section.

Audience

To use this publication, you should be familiar with Cisco or equivalent optical transmission hardware and cabling, telecommunications hardware and cabling, electronic circuitry and wiring practices, and preferably have experience as a telecommunications technician.

Organization

This Cisco ONS 15540 ESP TL1 Command Reference is organized into the following chapters:


Chapter	Title	Description
Chapter 1	Getting Started	Explains how to gain access to a TL1 session, command syntax, and autonomous messages.
Chapter 2	TL1 Command Components	Describes the components of TL1 commands, including AIDs (access identifiers) and parameter types.
Chapter 3	TL1 Commands	Lists and describes the Cisco ONS 15540 ESP TL1 commands.

Related Documentation

Use this Cisco ONS 15540 ESP TL1 Command Reference in conjunction with the following publications:

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Regulatory Compliance and Safety Information for the Cisco ONS 15500 Series

Document Conventions


Convention	Application
boldface	Commands and keywords in body text.
italic	Command input that is supplied by the user.
[ ]	Keywords or arguments that appear within square brackets are optional.
{ x \| x \| x }	A choice of keywords (represented by x) appears in braces separated by vertical bars. The user must select one.
Ctrl	The control key. For example, where Ctrl + D is written, hold down the Control key while pressing the D key.
`screen font`	Examples of information displayed on the screen.
boldface screen font	Examples of information that the user must enter.
< >	Command parameters that must be replaced by module-specific codes.

Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the document.


Warning	IMPORTANT SAFETY INSTRUCTIONS This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the translated safety warnings that accompanied this device. Note: SAVE THESE INSTRUCTIONS

Safety and Warning Information

For safety and warning information, refer to the Regulatory Compliance and Safety Information for the Cisco ONS 15500 Series document that accompanied the product. This document describes the international agency compliance and safety information for the Cisco ONS 15500 series. It also includes translations of the safety warnings that appear in the Cisco ONS 15500 series documentation.

Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

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