The premium Polycom 2200-15600-001 SoundStation IP 6000 Conference Phone has 802.3af Power over Ethernet, a twelve-foot microphone pickup, with expansion microphones for greater coverage (2215-07155-001), and an advanced SIP software features advanced call handling, security, and provisioning features.

Features: 

• Polycom HD Voice - Unparalleled clarity to make your conference calls more efficient and productive
• 12-foot microphone pickup - Combined with Automatic Gain Control for performance far beyond older SoundStation IP conference phones
• Extended microphones expand coverage to 20 x 30 feet for larger conference rooms
• Backlit display provides ease of use - 248 x 68-pixel resolution LCD makes menu navigation easy
• Support for foreign languages including Asian characters
• One Year Warranty

Functions:

• Power over Ethernet
• Call Transfer
• Call Hold
• Call Divert
• Call waiting
• Busy Lamp Field
• QoS Support
• Local three-way conference
• Comfort noise fill
• Voice activity detection
• Adaptive jitter buffer
• Packet loss concealment
• Acoustic echo cancellation

Specifications: 

• Industry-leading SIP software
• Robust interoperability - Compatible with a broad array of SIP call platforms
  Network interface - Ethernet10/100BaseT; supports Static IP and DHCP
• Codec support - G.711, G.729a, G.722, G.722.1, G.722.1C, Siren 14
• Protocol support - IETF SIP (RFC3261 and companion RFCs)
• Management support - Web-base configuration (HTTP), FTP/TFTP/HTTP/HTTPS support for downloading software updates and configuration files
• Power - Powered via 802.3af Power over Ethernet (PoE)