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Linksys SPA9000 Administrator Guide
Document Version 3.01
CHAPTER
1
Using the Linksys Voice System
This chapter provides an introduction to the components and functionality of the Linksys Voice System
(LVS). It includes the following sections:
• The Linksys Voice System, page 1-1
• Technology Background, page 1-6
• SPA9000 Architecture, page 1-11
• Where to Go From Here, page 1-16
The Linksys Voice System
This section provides basic information about the LVS VoIP PBX system and includes the following
topics:
• Overview, page 1-1
• SPA400 SIP-PSTN Gateway and Voicemail, page 1-2
• Auto-Attendant, page 1-3
• SPA9000 System Features, page 1-3
• Additional Features When Used with SPA900 Series IP Phones, page 1-5
Overview
The Linksys Voice System (LVS) is an affordable, feature-rich, multi-line voice over IP (VoIP) telephone
system that provides sophisticated communication services to small business users. The LVS uses
standard TCP/IP protocols and can provide global connectivity through any Internet Telephony Service
Provider (ITSP) that supports Session Initiation Protocol (SIP). In addition, with the optional SPA400,
the LVS provides full interconnectivity with the Public Switched Telephone Network (PSTN).
The LVS solution, illustrated in Figure 1-1, provides a line of IP communication products that include
the following:
• SPA9000 IP PBX
• SPA400 SIP-PSTN gateway
• SPA900 Series IP phones (SPA921, 922, 941, 942, and 962)