Cisco IP Phone 7841 User Manual

The Cisco IP Phone 7841 is a business-class VoIP desk phone featuring a high-resolution monochrome display, integrated Gigabit Ethernet switch, support for Power over Ethernet (PoE), HD voice, multiple programmable line keys, and support for Cisco Unified Communications Manager. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: High-resolution monochrome display, Handset with receiver, Speakerphone, Programmable line/feature keys, Navigation cluster, Volume rocker, Headset port, Ethernet ports.

Installation

Unpack and inspect contents. Place on stable desk surface.

1. Connect to Network: Plug Ethernet cable from switch into the LAN port on the phone.
2. Connect PC (Optional): Plug PC Ethernet cable into the PC port on the phone.
3. Connect Handset: Insert handset cord into the handset port.
4. Power the Phone: Use PoE from switch or connect the optional power adapter to the DC port.
5. Connect Headset (Optional): Plug wired headset into the 3.5mm headset port.

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

First-Time Setup

Phone will boot and register with Cisco Unified Communications Manager (CUCM).

1. Initial Boot: Wait for phone to power up and display "Registering" or "Configuring".
2. Verify Registration: Check for your extension number and username on the screen.
3. Set Language: Press the Settings button, navigate to User Preferences > Language.
4. Adjust Display: In Settings, adjust screen contrast and backlight timer as needed.
5. Set Ringer: Choose and test ringer type and volume via the Volume rocker and Settings.

CAUTION! Do not unplug during firmware upgrade. Contact administrator for network settings.

Specifications

• Display: High-resolution monochrome LCD.
• Network: 10/100/1000 Mbps Ethernet, 802.3af PoE.
• Audio Codecs: G.711, G.729a, G.722 (wideband).
• Protocols: SIP (Session Initiation Protocol), SCCP (Skinny Client Control Protocol).
• Programmable Keys: Multiple line/feature keys (configurable via CUCM).
• Ports: Two RJ-45 (LAN, PC), RJ-9 (handset), 3.5mm (headset), DC power.
• Power Source: 802.3af PoE (Class 2) or 12V DC external adapter.
• Operating Temp: 32°F to 104°F (0°C to 40°C).

Controls and Settings

Access menus via the Settings button or navigation cluster. Front Buttons: Line keys, Hold, Transfer, Conference, Settings, Messages, Speakerphone, Mute, Headset, Volume rocker, Navigation cluster.

Key Functions: Hold to place call on hold. Transfer to move a call. Conference to start a conference call. Messages for voicemail. Speakerphone for hands-free. Mute to turn off microphone. Headset to toggle headset mode.

Settings Menu: User Preferences (Language, Contrast, Ringtone), Network Configuration (view IP, status), Device Information (model, firmware).

Connecting Devices

Network: LAN port to switch. PC: PC port to computer. Headset: 3.5mm port to headset.

1. Ensure phone is powered off or disconnected before making connections.
2. Use standard Ethernet cables (Cat5e or higher recommended).
3. For headset use, enable headset mode by pressing the Headset button.

Tip: Label cables for easy identification. Use the integrated switch to connect your PC and save a switch port.

Making and Receiving Calls

Basic call handling procedures.

1. Make a Call: Lift handset or press Speakerphone/Headset, then dial number. Or dial first, then lift handset/press Speaker.
2. Answer a Call: Lift handset, press Speakerphone, press Answer softkey, or press the flashing line key.
3. End a Call: Hang up handset, press Speakerphone, or press EndCall softkey.
4. Hold/Resume: Press Hold button. Press Resume softkey or line key to retrieve.
5. Transfer: During a call, press Transfer, dial target number, announce call, then press Transfer again to complete.
6. Conference: During first call, press Conference, dial second party, press Conference again to merge.
7. Mute: Press Mute button to toggle microphone on/off (Mute LED indicates status).
8. Adjust Volume: Use Volume rocker during a call for handset/speaker volume, or when idle for ringer volume.

WARNING! Emergency calls (e.g., 911) may require configuration. Confirm with administrator.

Accessibility Features

Hearing Aid Compatible (HAC) Handset: Meets FCC requirements. Visual Alerts: Flashing line key for incoming calls. Ringer Volume: Adjustable up to 88 dBA. High-Contrast Display: Adjustable contrast for improved visibility.

Care & Cleaning

Disconnect power before cleaning. Use a soft, dry cloth. For stubborn marks, dampen cloth with water only. Do not use cleaners, solvents, or aerosols.

CAUTION! Never spray liquids directly on the phone. Avoid extreme temperatures and humidity.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. CE marked. RCM (Australia). For detailed compliance information, see the Regulatory Compliance and Safety Information document. Copyright © Cisco Systems, Inc. For support, contact your system administrator or visit www.cisco.com/go/phones.

Troubleshooting

Reset: To restart phone, unplug power and reconnect, or use Settings > Network Configuration > Restart.

Service: Contact your system administrator or Cisco Technical Support.