CP-8831-K9= Cisco 8800 IP Phone

FEATURES

• Display: Large high-resolution, graphical 3.5-inch backlit display (396 x 162 pixels)
• Ergonomic Design: Detached control panel for easy viewing without having to move the entire unit.
• Fixed Feature Keys: Volume Control, Mute, Two-way Navigation with Select, Redial (Soft-Key), and Hold (Soft-Key)
• Connectivity: Ethernet line (RJ45)
• Microphone: Four Hemi-Cardioid microphones are perfectly spaced so that they combine to provide a 180-degree pickup pattern around the device. 
• Audio: High-quality wideband speakerphone technology. Included are Automatic Gain Control, comfort-noise generation, 
• Expandability: Supports both wired or wireless external microphones for expanded coverage (sold separately). You can also daisy chain two units together.
• Network: Session Initiation Protocol (SIP) for signaling
• Security: Device authentication and signaling encryption using Transport Layer Security (TLS) with Advanced Encryption Standard 128 (AES-128).
• Configuration: Dynamic Host Configuration Protocol (DHCP) client or static configuration

POWER REQUIREMENTS

• Supports 802.3af Power-over-ethernet (PoE)
• Can also be powered via optional Power Cube 3 power adapter if PoE is not available on your network (power supply sold separately – see accessories above)

SYSTEM COMPATIBILITY

• Cisco Unified Communications Manager (Cisco UCM) Releases 7.1(5), 8.5(1), 8.6(2), 9.0, and later
• Cisco Business Edition 3000 Releases 8.6(1) and later
• Cisco Business Edition 6000 Releases 8.6(5) and later
• Cisco Unified Communications Manager Express (CME) Versions 15.3(2)T, PI21, 15.3(3)T, PI22, and later