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

Cisco CP-7841-K9 is a high-performance VoIP phone designed for modern business environments, delivering a powerful combination of advanced call features, crystal-clear audio quality, and enterprise-grade security. As part of the Cisco 7800 Series, it is ideal for organizations seeking reliable and scalable IP telephony.

Equipped with a 5-inch grayscale LCD display (800 x 480 resolution), the CP-7841 provides users with clear, easy-to-read call information. The backlit screen ensures visibility in all lighting conditions, while 8 programmable line keys with multi-color LED indicators offer intuitive and efficient call management.

Engineered for exceptional voice clarity, the phone supports wideband audio, a full-duplex speakerphone, acoustic echo cancellation (AEC), and a RJ-9 headset port — perfect for professionals who rely on hands-free or headset-based communication.

Key Features

Display & Interface

• 5-inch grayscale LCD display with 800 x 480 pixels resolution
• Backlit screen for use in low-light settings
• 8 programmable line keys with multi-color LED indicators
• Dedicated buttons for Hold, Transfer, Conference, Redial, and Voicemail
• 5-way navigation button and context-sensitive soft keys for simple operation

Audio & Sound Quality

• Wideband audio for high-definition voice calls
• Full-duplex speakerphone with acoustic echo cancellation (AEC)
• RJ-9 headset port for wired headset support
• Noise reduction technology for improved voice clarity

Connectivity

• 2 x Gigabit Ethernet ports (10/100/1000 Mbps) for fast network connection
• Power over Ethernet (PoE) support — power and data over a single cable
• Optional AC power adapter support (sold separately) for non-PoE setups

Call Handling & Productivity

• 8 programmable line/feature keys for managing multiple calls efficiently
• Call hold, transfer, conference, redial, voicemail, call waiting, and forwarding
• Local address book and call history for better contact management

Security & Network

• SIP signaling and SRTP media encryption for secure voice communications
• TLS encryption and 802.1X authentication for secure network access
• VLAN support for QoS and network segmentation

Energy Efficiency & Environment

• PoE support for energy-efficient deployment
• Low power consumption for eco-friendly operations
• Operating temperature: 0°C to 40°C
• Storage temperature: -40°C to 70°C
• Humidity: 10% to 90% (non-condensing)

Physical Specifications

• Dimensions: 233 x 198 x 183 mm (9.2 x 7.8 x 7.2 inches)
• Weight: 1 kg (2.2 lbs)
• Power Supply: Not included (PoE or optional AC adapter required)

Common FAQs

Does the Cisco CP-7841-K9 support PoE?
Yes, it supports Power over Ethernet (PoE) for simplified setup — just one cable for power and data.

Can it be used without PoE?
Yes, but you’ll need to purchase a separate AC power adapter (not included).

Is it compatible with Cisco phone systems?
Absolutely — it’s optimized for Cisco Unified Communications and SIP deployments.

Does it support headsets?
Yes, via the RJ-9 headset port, making it perfect for call centers and hands-free professionals.

How secure is this VoIP phone?
It features TLS, SRTP, and 802.1X for enterprise-grade security.

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