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Understanding Cisco IP telephony

I am new to IP telephony. I want to know all about the Cisco IP telephony architecture. What are the various components present in Cisco IP telephony?

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To understand the IP telephony offerings from Cisco you will want to read the following:

Cisco® CallManager Fundamentals: A Cisco AVVID Solution


Cisco IP Communications Express: CallManager Express with Cisco Unity Express

Editor note: You should also take a look at the following free chapter downloads on

Cisco CallManager Best Practices- Chapter 1: Planning the CallManager Implementation

Cisco IP Telephony - Chapter 1: Introduction to Cisco IP Telephony (CIPT) Components

Troubleshooting Cisco IP Telephony - Chapter 1: Methodology and Approach

Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization

This was first published in October 2005

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