Cisco Phone Manual 9841

The Cisco Phone 9841 is a business-class IP phone designed for reliable voice communication in enterprise environments. It features a high-resolution display, support for multiple lines, advanced call handling features, Power over Ethernet (PoE), 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 monochrome display, Handset, Speakerphone, Ethernet ports, Power adapter port, Volume controls, Programmable line/speed-dial buttons.

Feature	Description
Display	High-resolution monochrome LCD with backlight
Handset	Standard handset with noise-canceling microphone
Speakerphone	Full-duplex speakerphone for hands-free calls
Ethernet Ports	Two 10/100/1000 Ethernet ports (LAN and PC)
Power	Power over Ethernet (PoE) or external power adapter
Volume Controls	Separate controls for handset, speaker, and ringer
Line/Speed-dial Buttons	Programmable buttons for lines and speed dials
Headset Port	3.5mm headset jack for private listening
Hold Button	Places active call on hold
Conference Button	Initiates conference calls with multiple parties

Installation

Unpack and inspect contents. Place on stable surface.

Connect to network: Use Ethernet cable to connect LAN port to switch/router.
Connect PC (optional): Use second Ethernet port to connect computer.
Connect handset: Plug handset cord into phone base.
Power the phone: Use PoE from switch or connect external power adapter.

WARNING! Use only approved power adapters. Ensure network cables are securely connected.

First-Time Setup

Power on phone; follow on-screen prompts.

Network registration: Phone will attempt to register with Cisco Unified Communications Manager.
Set language: Press Settings button, navigate to User Preferences > Language.
Configure time/date: Settings > Time & Date > Set manually or via network.
Program speed dials: Press Settings > Speed Dials > Assign numbers to buttons.

CAUTION! Do not disconnect power during firmware updates.

Specifications

Display: Monochrome LCD, 4 lines of text.
Network: 10/100/1000 Mbps Ethernet, IEEE 802.3af PoE.
Audio: Wideband audio support, G.711, G.729 codecs.
Protocols: SIP, SCCP, IEEE 802.1x, LLDP.
Buttons: 2 line buttons, 4 feature buttons (programmable).
Power Source: 48V DC via PoE or 12V external adapter.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Compliance: FCC Part 15, UL, CE.

Controls and Settings

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

Buttons: Hold, Conference, Transfer, Messages, Settings, Headset, Mute.

Settings Menu: User Preferences (Language, Ringtone, Screen Contrast), Network Configuration (IP address, DHCP), Call Features (Call Forward, Do Not Disturb). Audio Settings: Handset volume, Speaker volume, Ringer volume, Headset settings.

Connecting Devices

Network: Ethernet cable to LAN port. PC: Ethernet cable to PC port. Headset: 3.5mm plug to headset jack.

Turn off phone before connecting devices.
Match cables to ports (e.g., Ethernet to LAN).
Power on phone after connections are secure.

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

Advanced Call Features

Supports hold, transfer, conference, call forwarding.

Make call: Lift handset or press Speakerphone, dial number.
Hold: Press Hold button during active call.
Transfer: Press Transfer, dial recipient, press Transfer again.
Conference: Press Conference, dial participant, press Conference to merge.
Call Forward: Settings > Call Forward > Enable and set number.
Voicemail: Press Messages button to access voicemail.
Redial: Press Redial button or navigate to Recent Calls.
Do Not Disturb: Settings > Do Not Disturb > Enable to silence calls.

WARNING! Do not use phone with wet hands. Keep liquids away from device.

Accessibility Features

Visual Alert: Flashing LED for incoming calls. Audio Adjustments: Customizable ringer volume and tones. Headset Mode: Enable for hands-free operation.

Care & Cleaning

Unplug before cleaning. Use dry, lint-free cloth; no liquids or abrasive cleaners.

CAUTION! Do not spray cleaners directly on phone. Avoid extreme temperatures.

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 power	PoE/Power adapter	Check Ethernet cable for PoE; ensure power adapter is connected and outlet is live.
No network connection	Cable/DHCP	Verify Ethernet cable is secure; check DHCP server availability.
No dial tone	Registration/Line	Ensure phone is registered with CUCM; check line configuration.
Poor audio quality	Network/Codec	Check network for packet loss; verify codec settings in CUCM.
Display blank	Power/Backlight	Check power source; adjust screen contrast in settings.

Reset: Press and hold # key during boot to factory reset (use caution).

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