8841-K9 Buy-online VoIP cisco phone

Display:

• 5-inch (800 x 480 pixels) color LCD display
• Backlit with adjustable brightness for clear visibility in various lighting
• High-resolution display with 16-bit color depth for clear and vibrant visuals
• Navigation through a four-way directional pad and dedicated soft keys

Audio:

• Wideband audio support for HD voice clarity
• Full-duplex speakerphone with acoustic echo cancellation for clear, uninterrupted conversations
• High-definition audio handset for optimal voice quality
• Audio codecs supported: G.711, G.729, G.722, iLBC
• Dedicated buttons for mute, speakerphone, headset, and volume control
• Supports wired headsets via RJ-9 headset port

Connectivity:

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

Functionality:

• Supports up to 5 programmable line keys for handling multiple calls
• 5 context-sensitive soft keys for easy menu navigation and quick access to features
• Fixed feature keys for hold, transfer, conference, redial, voicemail, and directories
• Bluetooth support (with optional adapter for wireless headset connectivity)

Network & Security:

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

Power:

• Power over Ethernet (PoE) or optional external power supply (sold separately)
• Power consumption: PoE Class 2 (IEEE 802.3af)
• Energy-efficient design for lower power usage

Dimensions & Weight:

• Dimensions: 7.9 in. x 9.3 in. x 7.4 in. (200 mm x 236 mm x 189 mm)
• Weight: 2.1 lbs (0.95 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:

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