Cisco 6921, IP PhoneCondition:* New surplus stock, in OEM packaging. Open box. As pictured. Additional Notes:* Display: 396 x 81 pixel-based, anti-glare, monochrome display with white backlight* Call Appearance: Two voice lines* Fixed Feature Buttons: Hold (illuminated), Menu (illuminated), Transfer, Conference, Headset, * Speaker, Mute, Volume, Messages, Settings, Contacts* Navigation Keys: Scroll toggle bar* Programmable Softkeys: 4 buttons* Button Module Expansion: No* Speakerphone: Includes high-quality, 2-way speakerphone* Wall-Mountable: Yes, requires optional Cisco 6900 Series Wall Mount Kit (CP-WMK-C-6900=)* Ethernet Connectivity: Dual Ethernet (10/100) line interface (PC Pass Through & Network Connection)* Headset Port: Includes RJ9 headset port* Message Waiting Indicator: Yes* Adjustable Tilt Display: No* Video Communication: Requires Cisco Unified Video Advantage 2.2 and the VTIII camera for support.* Network: Cisco Discovery Protocol and IEEE 802.1 p/q tagging and switching* Security: Certificates, Image authentication, Device authentication, File authentication, Signaling authentication, Media encryption using Secure Real-Time Transfer Protocol (SRTP), Signaling encryption using Transport Layer* Security (TLS) ProtocolCiscoCP-6921-C-K9