Cisco Phone 7841 User Manual

The Cisco IP Phone 7841 is a single-line desk phone designed for basic voice communication in a business environment. It features a high-quality handset and speakerphone, a pixel-based display, support for 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 to Network 7. Making and Receiving Calls 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Handset, Speaker, Pixel-based display, Line buttons, Softkeys, Navigation cluster, Volume rocker, Headset port, Network ports.

Feature	Description
Handset	High-quality receiver and transmitter for voice calls
Speakerphone	Full-duplex speaker for hands-free communication
Display	Pixel-based screen for call information and menus
Line Button	Single line appearance for call handling
Softkeys	Context-sensitive buttons for phone functions
Navigation Cluster	Four-way rocker and Select button for menu navigation
Volume Rocker	Controls handset, speaker, and ringer volume
Headset Port	3.5mm port for connecting a wired headset
Network Ports	10/100/1000 SW and PC ports for data connection
Power	Power over Ethernet (PoE) or external power adapter

Installation

Unpack and inspect contents. Place on stable desk surface.

Connect to Network: Plug an Ethernet cable from the network switch into the phone's SW port.
Connect a Computer (Optional): Plug an Ethernet cable from the phone's PC port to your computer.
Connect Handset: Plug the coiled handset cord into the jack labeled with a handset icon.
Apply Power: The phone will power on via PoE. If not using PoE, connect the external power adapter.

WARNING! Use only the approved power adapter. Ensure cables are routed to avoid tripping hazards.

First-Time Setup

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

Network Registration: Wait for the phone to obtain an IP address and download its configuration.
Verify Extension: Once registered, your directory number (extension) should appear on the screen.
Set Preferences: Press the Settings button to adjust ringtone, screen contrast, and language.
Test Call: Lift the handset and dial a test number to verify audio quality.

CAUTION! Do not unplug the phone during the boot and firmware upgrade process.

Specifications

Phone Type: Single-line IP Phone.
Protocols: SIP (Session Initiation Protocol).
Audio: Wideband audio support (G.722), Acoustic Echo Cancellation.
Network: 10/100/1000 Mbps Ethernet, IEEE 802.3af PoE (Class 2).
Ports: Two 10/100/1000 Ethernet ports (SW, PC), Headset 3.5mm, Handset.
Display: Monochrome pixel-based graphical display.
Power Source:802.3af PoE or 12VDC external power adapter.
Compliance: Designed for use with Cisco Unified Communications Manager.

Controls and Settings

Access phone settings via the Settings button or the web interface.

Front Panel: Line button, Speakerphone button, Mute button, Headset button, Volume rocker, Navigation cluster, Softkeys.

Settings Menu: Navigate using the Navigation cluster. Options include: Ringtone Selection, Screen Contrast, Network Configuration (view only), Status (IP address, firmware).

Web Interface: Access by entering the phone's IP address in a web browser for advanced settings (admin credentials required).

Connecting to Network

Primary connection is via the SW (Switch) port for network and power.

Ensure the network switch provides PoE or have the power adapter ready.
Connect the Ethernet cable from the wall jack to the phone's SW port.
For a daisy-chained computer, connect a cable from the PC port to the computer's network port.
The phone will attempt to register automatically upon receiving power.

Tip: The PC port can be disabled by your administrator. Contact IT if you cannot connect a computer.

Making and Receiving Calls

Basic call handling procedures.

Make a Call: Lift handset OR press Speakerphone. Dial the number using the keypad.
End a Call: Hang up the handset OR press the Speakerphone button again.
Answer a Call: Lift handset OR press the flashing Line button OR press Speakerphone.
Mute: Press the Mute button during a call to mute your microphone (light turns on).
Hold: Press the Hold softkey to place a call on hold.
Transfer: During a call, press the Transfer softkey, dial the target number, then press Transfer again.
Volume Adjustment: Use the Volume rocker during a call to adjust handset/speaker volume, or when idle to adjust ringer volume.

WARNING! Do not use excessive force on the keypad or navigation buttons.

Accessibility Features

Visual Alert: Flashing line button for incoming calls. Audible Adjustments: Ringer volume and type can be changed in settings. Headset Mode: For hands-free operation, press the Headset button to activate headset mode.

Care & Cleaning

Unplug the power source before cleaning. Use a soft, slightly damp cloth. Do not use abrasive cleaners, solvents, or sprays directly on the phone.

CAUTION! Keep liquids away from the phone. Do not open the casing.

Regulatory Information

FCC Part 15: Class A digital device. Complies with Part 68 of FCC rules. Registered for use in the US. Contains FCC ID: LDK102030. For regulatory compliance information, visit www.cisco.com/go/telecompliance. Copyright © Cisco Systems, Inc. All rights reserved.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Phone does not power on	No power/PoE issue	Check Ethernet cable; try external power adapter; verify switch PoE is enabled.
No dial tone	Not registered/Network issue	Check network cable; wait for boot cycle; contact administrator to check registration.
Call audio is poor	Network congestion/Handset issue	Check network connection; try speakerphone; test with a different handset.
Display is blank or dim	Settings/Power	Adjust screen contrast in Settings; ensure phone is receiving adequate power.
Cannot access web interface	IP address/Admin settings	Find the IP address via the phone's Status menu; ensure HTTP access is enabled by admin.

Reset: To restart the phone, unplug the network/power cable and plug it back in.

Service: Contact your network or telecom administrator. For hardware support, visit www.cisco.com/support.