Cisco CP-7841-K9 IP Phone 7841 4-Line Gigabit Ethernet PoE Desk Phone
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Key Features Of The CP-7841-K9
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4 programmable line and feature keys
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3.5-inch graphical grayscale display
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396 × 162 pixel display resolution
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Integrated 10/100/1000 Gigabit Ethernet switch
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Two RJ-45 Ethernet ports
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Wideband audio
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Full-duplex speakerphone
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IEEE 802.3af PoE Class 1
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Cisco EnergyWise support
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Cisco Webex Phone OS
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On-premises, hosted and Webex Calling deployment support
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Suitable for business offices, administrative staff and managers
Cisco CP-7841-K9 IP Phone 7841
Business-class four-line IP phone with a 3.5-inch graphical display, Gigabit Ethernet, wideband audio, full-duplex speakerphone and IEEE 802.3af PoE Class 1 support.
The Cisco CP-7841-K9 is a business-class IP desk phone designed for reliable enterprise voice communication. Part of the Cisco IP Phone 7800 Series, it provides a practical combination of four programmable line and feature keys, wideband audio, Gigabit Ethernet and Power over Ethernet in a compact desktop endpoint.
The phone is designed for organizations that require dependable IP telephony for employees, administrative users, managers and other moderately active voice users. Its graphical display provides clear access to calling information, directories, messaging and supported phone applications.
Cisco supports flexible deployment models including on-premises, hosted and Webex Calling environments, subject to the applicable call-control platform, software and licensing requirements.

3.5-Inch Graphical Display
The CP-7841-K9 features a 3.5-inch graphical grayscale display with a resolution of 396 × 162 pixels. The white backlit display is designed to provide clear visibility of caller information, directory entries, menus, messaging and phone functions.
- 3.5-inch graphical display
- 396 × 162 pixel resolution
- Grayscale display with white backlighting
- Clear presentation of call and directory information
- Context-sensitive user interface

Four Programmable Line and Feature Keys
The Cisco CP-7841-K9 provides four programmable line and feature keys. These keys can be configured for directory numbers, speed dialing and supported call functions, giving users quick access to commonly used communication features.
Four Line Keys Supports four programmable line and feature keys.
Tri-Color LED Indicators Line-key indicators provide visual call-state information.
Speed Dial Programmable keys can provide quick access to frequently called contacts.
Multiple Calls Supports multiple call appearances according to the configured platform.
Wideband Audio and Full-Duplex Speakerphone
The CP-7841-K9 provides wideband audio and a full-duplex speakerphone for clear business communication. The audio design supports both conventional handset conversations and hands-free conference-style communication.
- Wideband audio support
- Full-duplex speakerphone
- Hands-free business communication
- Support for compatible Cisco and third-party headsets
- Clear voice communication for enterprise environments

Gigabit Ethernet Connectivity
The Cisco CP-7841-K9 incorporates an integrated 10/100/1000BASE-T Ethernet switch through two RJ-45 ports. One port connects the phone to the network while the second can provide downstream Ethernet connectivity to a desktop computer or another supported network device.
Ethernet: 10/100/1000 Mbps Gigabit Ethernet with two RJ-45 ports.
- Gigabit Ethernet connectivity
- Integrated Ethernet switch
- Two RJ-45 Ethernet ports
- PC pass-through connectivity
- Reduced desktop cabling requirements
Power over Ethernet
The CP-7841-K9 supports IEEE 802.3af Power over Ethernet Class 1. PoE allows the phone to receive power through the Ethernet network connection when connected to a compatible PoE-enabled switch or power source.
IEEE 802.3af Supports standard Power over Ethernet.
Class 1 Device Designed for efficient low-power operation.
Single Cable Deployment Network connectivity and power can be delivered through Ethernet.
EnergyWise Supports Cisco EnergyWise energy-management capabilities.
Enterprise Calling Features
The CP-7841-K9 provides a broad range of enterprise telephony functions when deployed with a compatible call-control platform. These capabilities help users manage daily business communications efficiently.
- Call hold and resume
- Call transfer
- Call forwarding
- Conference calling
- Call history
- Redial
- Speed dialing
- Corporate directory access
- Messaging and voicemail functions
- Caller identification
- Shared line support
- Navigation and menu controls
Cisco Webex Phone OS
Cisco's current product information identifies the IP Phone 7841 with Cisco Webex Phone OS. The common software platform across supported Cisco IP Phone 7800 and 8800 Series products helps simplify administration and software management.
Deployment flexibility: Cisco on-premises, hosted and Webex Calling deployment options are supported, with telephony features depending on the selected vendor or call-control platform.
Energy Efficiency
The Cisco IP Phone 7841 is designed with energy-efficiency features for business environments. It supports Cisco EnergyWise and Power over Ethernet Class 1 operation. Cisco's 7800 Series documentation also identifies the 7841 as Energy Star certified.
- PoE Class 1 operation
- Cisco EnergyWise support
- Energy-efficient enterprise endpoint design
- Power-saving capabilities for supported deployments
Network and Deployment
The CP-7841-K9 is designed for enterprise IP communication networks and can be deployed as part of a centralized business telephony infrastructure. Its Gigabit Ethernet switch provides both phone connectivity and a convenient downstream connection for compatible desktop equipment.
Enterprise LAN Designed for business Ethernet environments.
On-Premises Suitable for supported Cisco on-premises call-control deployments.
Hosted Telephony Supports supported hosted deployment models.
Webex Calling Supports supported Cisco Webex Calling deployments.
Ideal Applications
Corporate Offices Reliable IP voice communication for everyday business users.
Administrative Departments Suitable for users handling routine calls and business communications.
Managers Four programmable keys provide convenient access to important functions.
Reception Areas Compact enterprise phone for supported reception and front-office deployments.
Education Suitable for administrative offices and staff communication.
Healthcare & Commercial Enterprise IP telephony endpoint for compatible network environments.
Why Choose Cisco CP-7841-K9?
- Four programmable line and feature keys
- 3.5-inch 396 × 162 graphical display
- 10/100/1000 Gigabit Ethernet
- Two RJ-45 Ethernet ports with integrated switch
- Wideband audio
- Full-duplex speakerphone
- IEEE 802.3af PoE Class 1
- Cisco EnergyWise support
- Cisco Webex Phone OS platform
- On-premises, hosted and Webex Calling deployment options
- Designed for enterprise business communication
Product Information
The Cisco CP-7841-K9 provides a practical enterprise IP telephony solution with four programmable keys, a 3.5-inch graphical display, Gigabit Ethernet, wideband audio, full-duplex speakerphone and PoE Class 1. It is designed for organizations looking for a dependable business desktop phone with straightforward administration and flexible Cisco deployment options.
| Product Name | Cisco CP-7841-K9 IP Phone 7841 4-Line Gigabit Ethernet PoE Desk Phone |
|---|---|
| Weight | 1.170000 |
| Interface | Gigabit Ethernet |
| Ethernet | 10/100/1000 Gigabit Ethernet |
| I/O Port | 2 × RJ-45 Ethernet |
| Operating System | Cisco Webex Phone OS / IP Phone Firmware |
| Network/Network Standard | IEEE 802.3 |
| Operating Channels | 2.4 GHz / 5 GHz Wi-Fi |
| Operating Frequency | 2.4 GHz / 5 GHz |
| Dimensions | 22.91 × 25.73 × 4.00 cm |
| Power Supply (PoE) | IEEE 802.3af Class 1 |
| Manufacturer | Cisco |
| Color | Black |
| Country of Origin | United States |
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