Cisco Phone 8841 Manual

The Cisco IP Phone 8841 is a high-quality, feature-rich VoIP desk phone designed for business environments. It supports high-definition voice, a large color display, multiple line appearances, and extensive programmability. This manual covers 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. Using Phone Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Large color display, Handset, Speakerphone, Programmable line/feature keys, Navigation cluster, Volume rocker, Headset port, Ethernet ports.

Feature	Description
Display	5-inch color LCD with backlight
Audio	High-definition wideband audio, built-in speakerphone
Network Ports	Two 10/100/1000 Ethernet ports (PC and SW)
Headset Port	For dedicated headset connection
Programmable Keys	Up to 10 line/feature keys configurable via web interface
Power	Power over Ethernet (PoE) or external power adapter
Security	Support for 802.1X authentication, encrypted signaling/media
Conference	Built-in conference bridge capabilities
Hold/Resume	Single button for call hold and resume
Mute	LED-indicated mute button for microphone

Installation

Unpack and inspect contents. Place on stable desk surface.

Connect to network: Plug Ethernet cable from switch into SW port on phone.
Connect PC (optional): Plug Ethernet cable from PC port to computer.
Connect handset: Insert coiled handset cord into handset jack.
Connect headset (optional): Plug into headset port on side of phone.
Apply power: Use PoE from switch or connect external power adapter.

WARNING! Use only approved power adapter. Ensure cables are not pinched or damaged.

First-Time Setup

Power on phone; follow on-screen prompts.

Network registration: Phone will attempt to obtain IP address and register with call control.
Verify registration: Check for extension number and "Registered" status on screen.
Set preferences: Use Settings menu to configure language, time format, ringtone.
Program keys: Use web interface or phone menu to assign functions to programmable keys.
Test call: Place a test call to verify audio quality and functionality.

CAUTION! Do not place phone in direct sunlight or near heat sources.

Specifications

Display: 5-inch TFT color LCD, 480 x 272 pixels.
Audio Codecs: G.711, G.722, G.729, iLBC, Opus.
Network: Dual 10/100/1000 Mbps Ethernet with PoE (802.3af Class 2).
Protocols: SIP, SCCP, HTTP/HTTPS, TFTP, LDAP.
Programmable Keys: 10 physical keys with dual-color LEDs.
Power Source: 802.3af PoE or 48V DC external power adapter.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Dimensions: 8.3 x 10.6 x 6.3 inches (210 x 270 x 160 mm).

Controls and Settings

Access menu via NAVIGATION cluster. Front buttons: MUTE, HOLD/RESUME, SPEAKERPHONE, HEADSET.

Navigation: Up/Down/Left/Right arrows, SELECT, BACK, SOFT KEYS (context-sensitive).

Settings: Language, Time Format, Display Contrast, Ringtone Selection, Network Configuration. Audio: Volume controls for handset, speaker, ringer. Network: View IP address, subnet mask, gateway, DNS. Programmable Keys: Assign line appearances, speed dials, features (call forward, transfer).

Connecting Devices

Network: SW port to switch, PC port to computer. Audio: Handset, headset, external speaker (via headset port).

Turn off phone before connecting cables if using external power.
Match cables to ports (RJ45 to Ethernet, RJ9/RJ22 to handset).
Verify connections are secure and not loose.

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

Using Phone Features

Supports basic and advanced telephony features.

Make call: Lift handset or press SPEAKERPHONE/HEADSET, dial number.
Answer call: Lift handset, press SPEAKERPHONE, or press ANSWER soft key.
Hold call: Press HOLD/RESUME button.
Transfer call: Press TRANSFER, dial target number, press TRANSFER again.
Conference call: Press CONFERENCE, dial first participant, press CONFERENCE again, dial second participant.
Call forward: Press CFwdALL soft key or program via menu.
Voicemail: Press MESSAGES key or dial voicemail access number.
Directory: Access corporate directory or personal speed dials.

WARNING! Do not use handset cord to carry phone. Keep liquids away from device.

Accessibility Features

Hearing Aid Compatibility: Meets FCC requirements. Visual Alerts: Flashing LED for incoming calls. Audio Adjustment: Independent volume controls for handset, speaker, ringer. Large Font Option: Available in display settings.

Care & Cleaning

Unplug power before cleaning. Use slightly damp, lint-free cloth; do not use liquids or aerosols directly on phone.

CAUTION! Do not spray cleaning solutions on display or buttons. Avoid abrasive materials.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business use. CE Mark: Conforms to European directives. Industry Canada ICES-003: Compliant. 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
No display/power	Power/PoE issue	Check Ethernet/Power connection; verify switch PoE capability; try different cable.
No dial tone	Network/registration	Check network cables; verify phone is registered with call control; restart phone.
Poor audio quality	Network/configuration	Check network for packet loss; verify audio codec settings; test with headset.
Keys not responding	Software/firmware	Restart phone; check for firmware updates via administrator.
Cannot transfer/conference	Configuration	Verify feature is enabled on call control system; check programmable key assignments.

Reset: Settings > Admin Settings > Reset Settings (may require admin password).

Service: Contact network administrator or Cisco TAC for hardware issues.