Cisco CP-7841-K9= 7800 Series Voip Phone (Power Supply Not Included) 

Cisco 7841 delivers simple, highly secure, and highly cost-effective voice communications for small to large businesses. it is supported both on-premises and hosted from cisco and on third-party hosted call control platforms. the 7841 is an ideal endpoint for moderately active voice communications needs of workers, administrative staff, and managers.

Cisco CP-7841-K9, 7800 Series Voip Phone specifications

• Phone Model: Cisco CP-7841-K9 7800 Series VoIP Phone

Display and User Interface:

• Display: 3.5-inch (396x162 pixels) white backlit grayscale display
• Softkeys: 4 programmable context-sensitive softkeys
• Line Keys: 4 programmable line keys with tri-color LED indicators
• Navigation Cluster: 4-way navigation cluster for menu and feature navigation

Audio Features:

• Wideband Audio: Yes (G.722)
• Full-Duplex Speakerphone: Yes
• Acoustic Echo Cancellation: Yes
• Background Noise Reduction: Yes
• Headset Port: RJ-9 headset port

Voice Quality:

• Audio Codec Support: G.711a, G.711u, G.729a, G.729ab, iLBC
• VoIP Protocols: SIP (Session Initiation Protocol)

Networking and Connectivity:

• Ethernet Ports: 2 x 10/100/1000 Gigabit Ethernet ports (RJ-45)
• Power over Ethernet (PoE) Support: Yes (IEEE 802.3af)
• PC Pass-Through Port: 1 x 10/100/1000 Gigabit Ethernet port (RJ-45) for connecting a computer

Additional Features:

• Directory: Supports local and server-based directories
• Call History: Lists incoming, outgoing, and missed calls
• Call Waiting Indicator: Yes
• Call Transfer: Yes
• Call Forwarding: Yes
• Redial: Yes
• Do Not Disturb: Yes
• Multi-language Support: Yes
• Wall-Mountable: Yes, with optional wall mount kit

Power Requirements:

• Power Source: Power over Ethernet (PoE) or optional external power supply

Physical Characteristics:

• Dimensions (W x D x H): Approximately 8.1 x 7.1 x 6.0 inches (20.6 x 18.0 x 15.2 cm)
• Weight: Approximately 2.1 lbs (0.95 kg)

Environmental Conditions:

• Operating Temperature: 32°F to 104°F (0°C to 40°C)
• Storage Temperature: -4°F to 158°F (-20°C to 70°C)
• Operating Humidity: 10% to 90% non-condensing