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

Chapter 7. Voice-Mail System Design

The previous chapter discussed the design of the call-processing architecture for XYZ, Inc. This chapter addresses the design and customization of Cisco Unity as an IP-based voice-mail system for XYZ and focuses on the following topics:

• Defining the voice-mail system architecture

• Designing the Cisco Unity system

• Installing Cisco Unity

• Integrating voice mail

• Understanding the Cisco Unity networking

• Networking Octel and Cisco Unity

• Customizing the Cisco Unity system

• Designing multiple directory handlers

• Improving the user experience during migration

Based on the information provided about XYZ in Chapter 3, “Large-Scale Enterprise Requirements for IP Telephony,” XYZ uses Microsoft Exchange and has deployed Active Directory ...