Cisco Phone Manual 8841

The Cisco IP Phone 8841 is a multi-line business phone supporting up to 10 lines, with a high-resolution color display, built-in Gigabit Ethernet switch, support for Power over Ethernet (PoE) or external power, HD voice, 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 Call Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-resolution color display, Handset with HD voice, Speakerphone, Built-in Gigabit Ethernet switch, Power over Ethernet (PoE) support, Headset port, Volume control buttons.

Feature	Description
Display	High-resolution color LCD with backlight
Lines	Supports up to 10 lines with line keys
Network	Built-in Gigabit Ethernet switch (10/100/1000)
Power	Power over Ethernet (PoE) or external power adapter
Audio	HD voice quality, wideband audio support
Handset	Standard handset with light strip indicator
Speakerphone	Full-duplex speakerphone for hands-free calls
Headset Port	3.5mm headset jack for wired headsets
Volume Control	Dedicated buttons for handset, speaker, and ringer volume
Conference	Built-in conference capability

Installation

Unpack and inspect contents. Place on stable surface.

Connect network cable: Plug Ethernet cable into network port on phone, then connect to network switch.
Connect handset: Plug handset cord into handset port on phone.
Power the phone: Use Power over Ethernet (PoE) from switch or connect external power adapter.
Connect optional headset: Plug into 3.5mm headset jack.

WARNING! Use only approved power adapter. Ensure network cables are properly seated.

First-Time Setup

Power on phone; follow on-screen prompts.

Network registration: Phone will attempt to register with Cisco Unified Communications Manager (CUCM).
Configure settings: Use phone menu to set language, time zone, and ring tones.
Line assignment: Administrator assigns phone lines and extensions via CUCM.
Test call: Place test call to verify audio quality and connectivity.

CAUTION! Do not unplug during firmware update. Ensure proper ventilation.

Specifications

Display: High-resolution color LCD, 480 x 272 pixels.
Network: 10/100/1000 Mbps Ethernet, IEEE 802.3af PoE.
Audio: HD voice, G.711, G.729a, G.722 codecs.
Ports: Two Ethernet ports (network, PC), handset, headset, external power.
Protocols: SIP, SCCP, IEEE 802.1X, LLDP-MED.
Power Consumption: Up to 6.3W (PoE).
Operating Temp: 32°F to 104°F (0°C to 40°C).
Supported Services: Call waiting, hold, transfer, conference, voicemail.

Controls and Settings

Access menu via Settings button. Front Panel: Speakerphone, Mute, Headset, Volume controls, Navigation cluster.

Softkeys: Dynamic buttons for call functions (Answer, EndCall, Hold, Transfer, Conference).

Settings: Language, Time Format, Ring Tones, Screen Contrast, Network Configuration. Audio: Handset Volume, Speaker Volume, Ringer Volume, Headset Gain. Network: IP Address, Subnet Mask, Default Gateway, DNS Server. Security: Phone Lock, Admin Password (default varies).

Connecting Devices

Network: Ethernet cable to switch. PC: Connect PC to phone's PC port. Headset: 3.5mm jack.

Turn off phone before connecting devices.
Match cables to ports (Ethernet to network port).
Verify link lights on Ethernet ports.

Tip: Use Cat5e or higher Ethernet cables for Gigabit performance.

Advanced Call Features

Supports hold, transfer, conference, call forwarding.

Place call: Lift handset or press Speakerphone, dial number.
Hold: Press Hold button to place call on hold.
Transfer: During call, press Transfer, dial target number, press Transfer again.
Conference: During call, press Conference, dial second party, press Conference again.
Call Forward: Press CFwdAll softkey, enter destination number.
Voicemail: Press Messages button to access voicemail.
Redial: Press Redial to call last dialed number.
Speed Dial: Assign numbers to speed-dial keys.

WARNING! Do not use phone during electrical storms. Secure cords to prevent tripping.

Accessibility Features

Hearing Aid Compatibility: Meets FCC requirements. Visual Alerts: Flashing light strip for incoming calls. High-Contrast Display: Adjustable contrast for better visibility. Ringer Volume: Adjustable up to 90 dB.

Care & Cleaning

Unplug before cleaning. Use slightly damp cloth; no liquids or aerosols.

CAUTION! Do not spray liquids directly on phone; avoid abrasive cleaners.

Regulatory Information

FCC Part 15: Class A digital device; complies with interference limits for business use. Copyright © Cisco Systems, Inc. All rights reserved. For support, visit www.cisco.com or contact Cisco Technical Assistance Center (TAC).

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display	Power/connection	Check power source; verify PoE or power adapter; reseat cables.
No dial tone	Network/registration	Check Ethernet connection; verify phone registered with CUCM.
Poor audio quality	Network/headset	Check network QoS settings; test with handset vs. headset.
Cannot make calls	Configuration	Verify dial plan and line configuration in CUCM.
Phone not registering	IP address/DHCP	Check DHCP server; verify IP address assignment.

Reset: Press and hold # key during boot to reset to factory defaults.

Service: Cisco TAC: 1-800-553-2447; www.cisco.com/support