Chapter 1: Getting Started; Introduction To The Spa9000 Voice System - Linksys SPA921 - Cisco - IP Phone Installation And Configuration Manual

Getting Started
NOTE

Introduction to the SPA9000 Voice System

SPA9000 Voice System Installation and Configuration Guide for Web UI
This chapter introduces you to the SPA9000 Voice System by describing the
components and presenting several deployment scenarios.
This chapter is essential reading before you begin installing the equipment or
configuring the system.
•
"Introduction to the SPA9000 Voice System," on page13
•
"Deployment Scenarios," on page15
•
"Introducing Components of the SPA9000 Voice System," on page 20
The SPA9000 Voice System is an affordable and feature-rich IP telephone system
that is designed especially for the Small and Home Office. The SPA9000 Voice
System uses standard TCP/IP protocols and can provide global connectivity
through any Internet Telephony Service Provider (ITSP) that supports the Session
Initiation Protocol (SIP).
At minimum, the SPA9000 Voice System includes a SPA9000 IP PBX and one or
more SPA900 series IP phones. These devices are connected through a switch to
a local area network. With an Internet connection, the SPA9000 Voice System can
subscribe to ITSP services to take advantage of low calling rates. With the
SPA400, the SPA9000 Voice System can connect to the Public Switched
Telephone Network (PSTN) to support analog phone lines. See
Voice System with the SPA9000 and SPA400" on page14
typical deployment.
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Figure 1 "SPA9000
to learn more about a
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