Cisco UC Phone CP-8841 Manual

The Cisco Unified IP Phone 8841 is a high-performance, full-featured business phone supporting voice, video, and data communications. It features a high-resolution color display, support for up to 12 lines, Gigabit Ethernet, Power over Ethernet (PoE), built-in Bluetooth, and integration with Cisco Unified Communications Manager. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Advanced Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-resolution color display, Handset, Speakerphone, Keypad, Ethernet ports, Bluetooth module.

Feature	Description
Display	5-inch color LCD with touch support
Network Ports	Gigabit Ethernet (10/100/1000) with PoE support
Audio	Full-duplex speakerphone, HD voice support
Bluetooth	Built-in for headset connectivity
Lines/Speed Dials	Up to 12 lines, programmable speed dials
Video Support	Optional video capability with camera module
Security	802.1X authentication, encrypted signaling
Power	PoE (802.3af) or external power adapter
Headset Port	RJ-9 headset connector
USB Port	For future expansion modules

Installation

Unpack and inspect contents. Place on stable surface.

Connect network cable: Plug Ethernet cable into NETWORK port on phone.
Connect computer (optional): Use PC port to connect computer for pass-through.
Connect handset: Plug handset cable into HANDSET port.
Power connection: Use PoE from switch or connect external power adapter.
Mount on wall (optional): Use wall mount kit if required.

WARNING! Use only approved power sources. Ensure proper ventilation around device.

First-Time Setup

Power on phone; follow on-screen prompts.

Network registration: Phone will automatically obtain IP address and register with Cisco Unified Communications Manager.
User configuration: Enter extension and authentication credentials if prompted.
Language selection: Choose preferred language from Settings menu.
Date and time: Automatically synchronized from network.
Test call: Make test call to verify audio quality.

CAUTION! Do not disconnect during firmware upgrade. Ensure stable network connection.

Specifications

Display: 5-inch color TFT LCD, 480 x 272 pixels.
Network: 10/100/1000 Mbps Ethernet, IEEE 802.3af PoE.
Audio Codecs: G.711, G.722, G.729, iLBC.
Protocols: SIP, SCCP, HTTP, HTTPS, TFTP.
Bluetooth: Version 3.0, HSP and HFP profiles.
Power Consumption: 6.5W maximum with PoE.
Operating Temperature: 32°F to 104°F (0°C to 40°C).
Dimensions: 9.0 x 10.2 x 6.5 inches (229 x 259 x 165 mm).
Weight: 3.3 lbs (1.5 kg).

Controls and Settings

Access settings via touch screen or physical buttons. Front Panel: Volume rocker, Mute button, Headset button, Speakerphone button, Navigation cluster.

Touch Screen: Home screen with line status, Contacts, Call history, Settings, Applications.

Settings: Network configuration, Audio settings, Display brightness, Ring tones, Bluetooth pairing. Phone Features: Call forward, Do not disturb, Conference calling, Transfer, Hold, Park. Security: Phone lock, Password change, Authentication settings.

Connecting Devices

Network: Ethernet cable to NETWORK port. Computer: PC port for network pass-through. Headset: RJ-9 connector or Bluetooth.

Turn off phone before connecting accessories.
Match cables to correct ports.
For Bluetooth headset: Enable Bluetooth in settings, then pair device.
For expansion module: Connect to USB port if supported.

Tip: Use Cat5e or better Ethernet cables for optimal performance.

Advanced Features

Supports advanced UC features through Cisco Unified Communications Manager.

Video calls: With optional camera module, make video calls to compatible endpoints.
Extension Mobility: Log into any phone with your extension and settings.
Call Recording: Initiate call recording if enabled by administrator.
XML Services: Display custom web applications on phone screen.
Busy Lamp Field: Monitor status of other extensions.
Speed Dials: Program frequently called numbers for one-touch dialing.
Conference Calls: Set up multi-party conferences.
Call Park: Park calls for retrieval from other phones.

WARNING! Only use approved accessories. Unauthorized modifications may void warranty.

Accessibility Features

Visual Alert: Flashing LED for incoming calls. Audio Adjustment: Separate volume controls for handset, speaker, ringer. High Contrast: Display settings for improved visibility. TTY Support: Connect TTY device to headset port.

Care & Cleaning

Unplug before cleaning. Use slightly damp, lint-free cloth. Do not use abrasive cleaners or solvents.

CAUTION! Avoid liquid contact with ports and openings. Keep away from direct heat sources.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business use. CE Mark: Complies with European directives. ICES-003: Complies with Canadian standards. Copyright © 2025 Cisco Systems, Inc. All rights reserved. For support, visit www.cisco.com or contact Cisco Technical Assistance Center.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Phone not powering on	Power source/connection	Check PoE switch or power adapter; verify cable connections.
No network connection	Cable/configuration	Check Ethernet cable; verify network settings; restart phone.
No audio on calls	Volume/mute settings	Adjust volume; check mute status; verify audio codec configuration.
Display issues	Brightness/settings	Adjust display brightness; restart phone; check for firmware updates.
Cannot register to CUCM	Network/configuration	Verify IP address; check TFTP server settings; confirm credentials.

Reset: Settings > Admin Settings > Reset if available (requires admin password).

Service: Contact Cisco TAC; www.cisco.com/go/support