Cisco Phone 7941 User Manual

The Cisco IP Phone 7941 is a full-featured VoIP telephone supporting SIP and SCCP protocols, with a high-resolution pixel-based display, four programmable line/feature buttons, integrated 10/100 Mbps Ethernet switch, built-in headset port, speakerphone, and support for Power over Ethernet (PoE) or external power supply. It provides advanced telephony features including call hold, transfer, conference, and voicemail access. 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, Four programmable line/feature buttons, Navigation cluster, Ethernet ports, Headset port, Power connector.

Feature	Description
Display	High-resolution pixel-based LCD with adjustable contrast
Line/Feature Buttons	Four programmable buttons for lines, speed dials, or features
Handset	Standard telephone handset with light indicator
Speakerphone	Full-duplex speakerphone for hands-free operation
Headset Port	2.5mm port for optional headset connection
Ethernet Ports	10/100 Mbps switch with PC port for daisy-chaining
Navigation Cluster	Four-way navigation with select button for menu access
Volume Control	Roller for adjusting handset, speaker, and ringer volume
Mute Button	LED-lit button to mute microphone
Power Options	Power over Ethernet (802.3af) or external power adapter

Installation

Unpack and inspect contents. Place phone on stable surface.

Connect to network: Use Ethernet cable to connect SW port to network switch or router.
Connect PC (optional): Use Ethernet cable to connect PC port to computer.
Power the phone: Use Power over Ethernet (PoE) or connect external power adapter.
Connect handset: Plug coiled handset cord into handset port.
Connect headset (optional): Plug 2.5mm headset into headset port.

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

First-Time Setup

Phone will boot and attempt to obtain network configuration automatically.

Check network registration: Observe display for extension number or registration status.
Configure settings: Press Settings button to access network and phone parameters.
Set user preferences: Adjust ring tone, display contrast, and volume levels.
Program buttons: Use phone web interface or administrator tools to assign functions.

CAUTION! Do not disconnect power during firmware upgrade. Allow phone to complete boot process.

Specifications

Protocols: SIP and SCCP (Skinny Client Control Protocol).
Network: 10/100 Mbps Ethernet with integrated switch.
Power: IEEE 802.3af PoE Class 2 or 48V DC external power adapter.
Audio: G.711, G.729a, G.729ab, and wideband codecs.
Display: High-resolution monochrome graphical display.
Buttons: Four programmable line/feature buttons with LEDs.
Dimensions: 8.25 x 10.5 x 6.5 inches (approx).
Operating Temp: 32°F to 104°F (0°C to 40°C).
Compliance: FCC Part 15, UL, CE, and other regional standards.

Controls and Settings

Access menu via Settings button or web interface. Front Panel: Handset, Speakerphone, Mute, Volume roller, Navigation cluster, Line buttons.

Button Functions: Redial, Transfer, Conference, Hold, Messages, Settings, Mute, Headset, Speakerphone.

Settings Menu: Network configuration, User preferences, Phone status, Firmware information. Audio Settings: Ring tone selection, Volume levels for handset, speaker, ringer. Display Settings: Contrast adjustment, Screen timeout. Network Settings: IP configuration (DHCP/Static), VLAN settings, SIP parameters.

Connecting Devices

Network: SW port to network. PC: PC port to computer. Power: PoE or power adapter.

Turn off phone and devices before connecting.
Match Ethernet cables to correct ports (SW for network, PC for computer).
Ensure power source is appropriate for your installation.

Tip: Use Category 5e or higher Ethernet cables for best performance.

Advanced Call Features

Supports standard and advanced telephony features.

Make call: Lift handset or press Speakerphone, dial number.
Answer call: Lift handset, press Speakerphone, or press flashing line button.
Hold: Press Hold button to place call on hold.
Transfer: During active call, press Transfer, dial target number, press Transfer again.
Conference: During active call, press Conference, dial third party, press Conference again.
Voicemail: Press Messages button to access voicemail system.
Redial: Press Redial to call last dialed number.
Call Forward: Configure via phone menu or web interface.

WARNING! Emergency calls may require special configuration. Consult your system administrator.

Accessibility Features

Visual Alert: LED indicators for line status. Hearing Aid Compatible: Handset meets HAC requirements. Volume Boost: Adjustable volume for handset, ringer, and speaker. Large Text: Adjustable display contrast for better visibility.

Care & Cleaning

Unplug power before cleaning. Use slightly damp cloth for exterior; dry thoroughly. Do not use abrasive cleaners or solvents.

CAUTION! Do not spray liquids directly on phone. Keep away from excessive heat and moisture.

Regulatory Information

FCC Part 15: Class A digital device; complies with interference limits for business environments. Copyright © Cisco Systems, Inc. All rights reserved. For support, visit www.cisco.com or contact Cisco Technical Assistance Center. This product may be covered by one or more U.S. patents listed at www.cisco.com/go/patents.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display/power	Power connection	Check PoE switch or power adapter connection; verify cable integrity.
No network registration	Network configuration	Check Ethernet cable; verify IP address assignment; confirm VLAN settings.
No dial tone	Phone registration	Ensure phone is registered to call manager; check extension configuration.
Poor audio quality	Network issues	Check network congestion; verify QoS settings; test with different handset.
Buttons not working	Firmware/configuration	Reset phone to factory defaults; upgrade firmware; reconfigure button templates.

Reset: Unplug power, hold # key while reconnecting power to factory reset.

Service: Contact Cisco Technical Assistance Center or authorized service provider.