The SPA509G is part of Cisco's Small Business Pro series and has been fully tested to ensure complete interoperability with other VoIP equipment. The successful testing means that service providers are able to launch feature rich services to customers. The Cisco SPA509G IP Phone is a 12-Line IP Phone with a 2-Port Switch, Power over Ethernet and an LCD Display. 

Cisco SPA 509G IP Phone Key Features

• Cisco HD Voice for unsurpassed voice clarity and enhanced speaker quality
• Monochrome backlit display for ease of use, aesthetics, and on-screen applications
• Connects directly to an Internet telephone service provider or to an IP private branch exchange (PBX)
• Easy installation and highly secure remote provisioning, as well as menu-based and web-based configuration
• Full-featured 12-line business-class IP phone supporting Power over Ethernet (PoE)
• Supports up to two Cisco SPA500S Expansion Module, adding up to 64 additional buttons
• Supports both Session Initiation Protocol (SIP) and Smart Phone Control Protocol (SPCP) with the Cisco Unified Communications 500 Series for Small Business

Comprehensive Interoperability and SIP-Based Feature Set

With hundreds of features and configurable service parameters, the Cisco SPA509G IP Phone addresses the requirements of traditional business users while building on the advantages of IP telephony. Features such as easy station moves and shared line appearances (across local and geographically dispersed locations) are just some of the many advantages of the Cisco SPA 509G IP Phone.

The Cisco SPA 509G IP Phone with Programmable Keys also supports productivity-enhancing features such as VoiceView Express and Cisco XML applications when used with the Cisco Unified Communications 500 Series in SPCP mode.

Carrier-Grade Security, Provisioning, and Management

The Cisco SPA509G IP Phone uses standard encryption protocols to perform highly secure remote provisioning and unobtrusive in-service software upgrades. Remote provisioning tools include detailed performance measurement and troubleshooting features, enabling network providers to deliver high-quality support to their subscribers. Remote provisioning also saves service providers the time and expense of managing, preloading, and reconfiguring customer premises equipment.