8851-K9 Buy-online IP cisco phone

Display:

• 5-inch (800 x 480 pixels) color LCD display with backlight
• High-resolution display with 16-bit color depth for clear and vibrant visuals
• Adjustable brightness for optimal visibility in varying light conditions
• Four-way navigation pad with select button for easy menu navigation
• Supports customizable wallpapers and screensavers

Audio Features:

• Wideband audio support for HD voice clarity
• Full-duplex speakerphone with acoustic echo cancellation for clear hands-free calling
• High-definition audio through the handset
• Audio codecs supported: G.711, G.729, G.722, iLBC
• Headset support via RJ-9 port for wired headsets
• Bluetooth support for wireless headset (optional adapter required)
• Dedicated keys for volume control, mute, speakerphone, and headset

Connectivity:

• Dual Gigabit Ethernet ports (10/100/1000 Mbps) for LAN and PC pass-through
• Power over Ethernet (PoE) support (IEEE 802.3af) for simplified power management
• Optional external power adapter (sold separately) for non-PoE environments

Functionality:

• Supports up to 5 programmable line keys for managing multiple calls
• 5 context-sensitive soft keys for quick access to on-screen options
• Fixed feature keys for essential functions such as hold, transfer, conference, redial, voicemail, and directories
• Voicemail waiting indicator with visual alert
• Supports multiple lines and call appearances for busy professionals

Network & Security:

• Protocol support: SIP (Session Initiation Protocol) and SCCP (Skinny Client Control Protocol)
• IPv4/IPv6 dual-stack support for flexible network configuration
• VLAN support for network segmentation
• Quality of Service (QoS): 802.1p, DSCP for prioritizing voice traffic
• Security features: TLS, SRTP, VPN support, 802.1X authentication, encrypted media

Power:

• Power over Ethernet (PoE) or optional external power adapter (sold separately)
• PoE Class 2 (IEEE 802.3af) for energy-efficient power usage

Dimensions & Weight:

• Dimensions: 9.4 in. x 7.9 in. x 7.1 in. (240 mm x 201 mm x 180 mm)
• Weight: 2.4 lbs (1.1 kg)

Operating Environment:

• Operating temperature: 32°F to 104°F (0°C to 40°C)
• Storage temperature: -40°F to 158°F (-40°C to 70°C)
• Humidity: 10% to 90% (non-condensing)

Compliance:

• RoHS compliant (Reduction of Hazardous Substances)
• Certifications: FCC, CE, UL, and other global regulatory certifications

Additional Features:

• LDAP directory integration for quick contact look-up
• Personalization options for ring tones, screen savers, and display settings
• Multilingual support for a diverse user base
• Multi-line support to handle several calls simultaneously
• High-quality display with customizable features for easy user interaction