Cisco IP Phone 8841 Manual

The Cisco IP Phone 8841 is a high-performance, multi-line business IP phone featuring a high-resolution color display, support for up to 16 lines, integrated Gigabit Ethernet switch, Power over Ethernet (PoE) support, HD voice quality, and advanced security features. It is designed for busy professionals requiring robust call handling and unified communications integration. 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 audio, Speakerphone, Navigation cluster, Softkeys, Ethernet ports, Headset port.

Feature	Description
Display	5-inch high-resolution color LCD with backlight
Lines/Speed Dials	Supports up to 16 lines and programmable speed dials
Network Ports	Dual Gigabit Ethernet ports with integrated switch
Power	IEEE 802.3af PoE or optional AC power adapter
Audio	HD wideband audio, full-duplex speakerphone, headset port
Security	802.1X authentication, secure boot, encrypted configuration files
Protocols	SIP and SCCP support
Unified Communications	Integration with Cisco Unified Communications Manager
Accessories	Support for wired headsets, expansion modules
Programmable Keys	Dedicated and soft keys for call functions and features

Installation

Unpack and inspect contents. Place phone on stable, flat surface.

Connect to Network: Plug Ethernet cable from switch into the NETWORK port on the phone.
Connect PC (Optional): Plug Ethernet cable from PC into the PC port on the phone.
Connect Handset: Insert handset cord into the HANDSET port.
Connect Headset (Optional): Plug headset into the HEADSET port.
Apply Power: Use PoE from switch or connect the optional AC power adapter.

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

First-Time Setup

Phone will boot and attempt to register with the call control system.

Network Registration: Phone should auto-discover and register with Cisco Unified Communications Manager (CUCM) or SIP server.
Verify Configuration: Check extension number and user information on the screen.
Set Language/Time: Use the Settings menu to select language and verify time/date.
Test Audio: Make a test call to verify handset, speakerphone, and headset audio.
Configure Preferences: Set up ringtones, volume, and screen contrast via the Settings menu.

CAUTION! Do not unplug the phone during firmware upgrade. Configuration is typically managed by your system administrator.

Specifications

Display: 5-inch color TFT LCD, 480 x 272 pixels.
Network Interfaces: Dual 10/100/1000BASE-T Ethernet ports with PoE (802.3af Class 2).
Audio Codecs: G.711, G.722, G.729a, iLBC, Opus.
Protocol Support: SIP (Session Initiation Protocol) and SCCP (Skinny Client Control Protocol).
Power Consumption: Max 6.9W (PoE), 7.5W (AC adapter).
Operating Environment: 32°F to 104°F (0°C to 40°C), 10% to 95% non-condensing humidity.
Physical Dimensions: 8.3 x 11.0 x 6.5 in (210 x 279 x 165 mm).
Compliance: FCC Part 15 Class B, CE, RCM, others.

Controls and Settings

Access menus via the NAVIGATION CLUSTER and softkeys.

Front Panel: MUTE button, Speakerphone button, Volume rocker, Headset button, NAVIGATION CLUSTER (Select, Up/Down/Left/Right), programmable line/feature keys.

On-Screen Menus: Use NAVIGATION CLUSTER to access: - Settings: User Preferences (Language, Time Format, Ringtone), Network Configuration (View IP address), Phone Information. - Call History: View placed, received, and missed calls. - Directory: Access personal and corporate directories. - Services: Access XML applications and web services.

Administrator Settings: Typically configured via CUCM administration web interface.

Connecting Devices

Network: Use CAT5e or higher cable to NETWORK port. PC: Use PC port for daisy-chaining. Audio: Use standard RJ-9 for handset, 3.5mm for headset.

Ensure phone and connected devices are powered off before making connections.
Use straight-through Ethernet cables for network connections.
For PoE, ensure your network switch provides adequate power (802.3af Class 2).
Select audio path (handset, headset, speakerphone) using the dedicated buttons.

Tip: Label cables for easy identification during maintenance.

Advanced Call Features

Supports standard and advanced telephony features.

Make a Call: Lift handset or press Speakerphone, dial number, or use speed dial.
Answer a Call: Lift handset, press Speakerphone, or press the flashing line key.
Hold/Resume: Press Hold softkey; press Resume to return.
Transfer Call: Press Transfer, dial target number, announce call, press Transfer again.
Conference Call: During a call, press Conference, dial next participant, press Conference again to merge.
Forward Calls: Use Call Forward All softkey or configure via CUCM user web portal.
Voicemail: Press Messages button or dial voicemail access number.
Call History: Press the Directory button and select Recent Calls.

WARNING! Emergency calls (e.g., 911) may have location limitations with VoIP. Confirm with your administrator.

Accessibility Features

Hearing Aid Compatibility (HAC): Handset is HAC rated. Visual Alerts: Flashing LED for incoming calls (can be configured). High-Contrast Display: Adjustable screen settings. Volume Boost: Amplified handset and ringer volume options.

Care & Cleaning

Disconnect power before cleaning. Use a soft, dry, lint-free cloth. For stubborn marks, lightly dampen cloth with water. Do not use abrasive cleaners, solvents, or sprays directly on the phone.

CAUTION! Avoid getting moisture in openings. Do not use compressed air to clean the handset receiver or microphone ports.

Regulatory Information

FCC Part 15: Class B digital device; complies with limits for residential installation. This device complies with Part 68 of FCC rules. Ringer equivalence number (REN): 0.1B. For repairs, contact Cisco authorized service providers. Copyright © 2025 Cisco Systems, Inc. All rights reserved. For support, visit www.cisco.com/go/support or contact your system administrator.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Phone does not power on	Power source/ cable	Check PoE switch or AC adapter connection; try a different Ethernet cable or power outlet.
No dial tone	Network/ registration	Check Ethernet link lights; verify phone is registered with CUCM/SIP server; contact administrator.
Poor audio quality	Network/ cable/ device	Check for network congestion; replace handset/headset cable; adjust volume settings.
Display is blank or dim	Settings/ backlight	Adjust screen contrast and backlight timeout in Settings menu; check for power saving mode.
Cannot access features (Hold, Transfer)	Configuration	Feature may not be enabled by administrator. Contact system administrator.
Phone reboots randomly	Power/ firmware	Check for unstable PoE power; administrator may need to update firmware.

Reset: For factory reset (clears all local settings), press and hold # while plugging in power. Release after second flash. Note: This requires reconfiguration by administrator.

Service: Contact your IT department or Cisco support at www.cisco.com/go/support.