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Cisco IOS Telephony Service, Version 2.02
Preface
This preface discusses the objectives, audience, organization, and conventions of this document. It also
provides sources for obtaining documentation from Cisco Systems.
Documentation Objectives
This document describes the tasks and commands necessary to configure and maintain Cisco IOS
Telephony Service (ITS) for systems with Cisco CallManager V3.0 and higher.
Audience
This document is intended primarily for users who configure and maintain Cisco ITS but who may not
be familiar with the tasks, the relationship between tasks, or the Cisco IOS software commands
necessary to perform particular tasks. This configuration guide is also intended for those users
experienced with Cisco ITS who need to know about new features, new configuration options, and new
software characteristics in the current Cisco IOS software release.
Documentation Organization
This document includes the following chapters:
• “Cisco IOS Telephony Service Overview,” which includes product history, prerequisites, and
reference information.
• “Required Configuration Tasks,” which includes prerequisites, restrictions, background information
about Cisco ITS, and description of how perform basic, required configuration.
• “Additional Configuration Tasks,” which includes information on the following features:
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Configuring date and time
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Configuring dial-plan pattern
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Configuring local directory
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Configuring keepalive
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Configuring interdigit timeout
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Configuring three-party G.711 conference calls
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