Full-featured 4-line business-class IP phone supporting Power over Ethernet (PoE)
Monochrome backlit display for ease of use, aethetics, and on-screen applications
Supports up to two Cisco® SPA500S 32-Button Attendant Consoles, adding up an additional 64 buttons
Supports both Session Initiation Protocol (SIP) and Smart Phone Control Protocol (SPCP) with the Cisco Unified Communications 500 Series for small business