Getting Started
Network Configurations
Cisco Small Business SPA 300 Series, SPA 500 Series, and WIP310 IP Phone Administration Guide 6
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At minimum, the Cisco SPA 9000 Voice System includes a Cisco SPA 9000 IP PBX 
and one or more Cisco SPA IP Phones. These devices are connected through a 
switch to a local area network. With an Internet connection, the Cisco SPA 9000 
Voice System can subscribe to ITSP services to take advantage of low calling 
rates. With the optional Cisco SPA 400, the Cisco SPA 9000 Voice System can 
connect to the Public Switched Telephone Network (PSTN) to support legacy 
phone lines. The Cisco SPA 400 also provides local voice mail service.
When you use Cisco SPA IP Phones with the Cisco SPA 9000 Voice System, the 
following additional phone features are available:
• Auto attendant for multiple extensions
• Music on hold
• Configurable call routing 
• Multiple DID numbers per VoIP line 
• Call hunting (sequential, round robin, random)
• Group paging
• Call parking
• Call pick up
• Group call pick up
You can configure and manage the Cisco SPA 9000 Voice System using an 
Interactive Voice Response (IVR) system, the Cisco SPA 9000 Voice System Setup 
Wizard, or a built-in web server. For more information, see the 
Cisco SPA 9000 
Voice System Administration Guide.
Cisco Unified Communications 500 Series for Small Business
The Cisco Unified Communications 500 Series for Small Business is an affordable 
appliance that provides voice, data, voice mail, Automated Attendant, video, 
security, and wireless capabilities while integrating with existing desktop 
applications such as calendar, e-mail, and customer relationship management 
(CRM) programs. The Cisco SPA 300 Series and Cisco SPA 500 Series IP Phones 
can be configured to work with this system.