Cisco IP Phone 7941 Manual

The Cisco IP Phone 7941 is a feature-rich VoIP telephone designed for business environments, supporting SIP and SCCP protocols. It features a high-resolution pixel-based display, four programmable line/feature buttons, integrated Ethernet switch, headset and handset ports, and support for Power over Ethernet (PoE) or external power. 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. Using Phone Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-resolution display, Handset, Speakerphone, Four programmable line/feature buttons, Navigation cluster, Integrated Ethernet switch.

Feature	Description
Display	High-resolution pixel-based LCD with backlight
Line/Feature Buttons	Four programmable buttons for lines or features (hold, transfer, etc.)
Navigation Cluster	Four-way navigation with select button for menu access
Handset	Standard handset with light indicator for messages
Speakerphone	Full-duplex speakerphone for hands-free calls
Headset Port	2.5mm headset port for private listening
Ethernet Ports	Two 10/100 Mbps ports (network and PC pass-through)
Power Options	IEEE 802.3af PoE or external power adapter
Protocols	SIP or SCCP (Skinny Client Control Protocol)
MUTE	Mutes microphone during calls

Installation

Unpack and inspect contents. Place on stable surface.

Connect to Network: Use Ethernet cable to connect phone's SW port to network switch.
Connect PC (optional): Use second Ethernet cable from PC port to computer.
Power the Phone: Use PoE from switch or connect external power adapter to power port.
Connect Handset: Plug handset cord into handset port.
Connect Headset (optional): Plug into 2.5mm headset port.

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

First-Time Setup

Phone boots and registers with call control system (CUCM or other).

Network Registration: Phone obtains IP via DHCP; registers with configured call manager.
Verify Registration: Check for extension number on display and steady green light on handset.
Set User Preferences: Press Settings button to adjust ring tone, volume, display contrast.
Program Line Buttons: Administrator can assign lines or features via call control system.

CAUTION! Do not disconnect during boot process. Ensure network connectivity.

Specifications

Display: High-resolution pixel-based LCD.
Network: 10/100 Mbps Ethernet, IEEE 802.3af PoE.
Audio: Wideband audio support, G.711, G.729 codecs.
Ports: Two Ethernet, handset, headset (2.5mm), external power.
Protocols: SIP or SCCP.
Buttons: Four programmable line/feature buttons, navigation cluster, volume, mute.
Power Source: 48V DC via PoE or external power adapter.
Operating Temp: 32°F to 104°F (0°C to 40°C).

Controls and Settings

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

Buttons: Line/Feature buttons (programmable), Hold, Transfer, Conference, Settings, Messages, Directory, Services, Help.

Settings Menu: User Preferences (ring type, volume, screen contrast), Network Configuration (view IP, subnet), Device Information (model, firmware). Web Interface: Access via IP address for advanced settings (admin only).

Connecting Devices

Network: Ethernet to SW port. PC: Ethernet to PC port. Power: PoE or external adapter.

Turn off devices before connecting cables.
Match cables to ports (Ethernet to network, handset to handset port).
Verify connections: Check link lights on Ethernet ports.

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

Using Phone Features

Supports basic 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 during call.
Transfer: Press Transfer, dial target number, announce, complete transfer.
Conference: Press Conference, dial participant, press Conference again to join.
Voicemail: Press Messages button to access voicemail.
Directory: Press Directory to view missed, received, placed calls.
Volume Adjustment: Use Volume rocker during call or idle.

WARNING! Do not expose to liquids. Use approved accessories only.

Accessibility Features

Visual Alert: Flashing handset light for messages. Audio Adjustments: Volume control for ringer, handset, speaker. Headset Mode: Enable for hands-free operation.

Care & Cleaning

Unplug from power before cleaning. Use dry, soft cloth; no liquids or abrasive cleaners.

CAUTION! Do not spray liquids directly on phone. Keep away from heat sources.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business use. CE marked for European compliance. Copyright © Cisco Systems, Inc. For support, visit www.cisco.com or contact Cisco Technical Assistance Center.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display/power	Power source	Check PoE switch or power adapter; ensure cable connected.
No network registration	Network/DHCP	Verify Ethernet cable; check DHCP server; reboot phone.
No dial tone	Registration/line	Check registration status; verify line assignment.
Poor audio quality	Network/configuration	Check network latency; verify audio codec settings.
Buttons not responding	Software/firmware	Reset phone; upgrade firmware via administrator.

Reset: Unplug power, wait 10 seconds, reconnect. For factory reset, press # while powering on (admin only).

Service: Contact network administrator or Cisco TAC.