Cisco 8811 Phone User Manual

The Cisco 8811 IP Phone is a business-class desk phone featuring a high-resolution grayscale display, support for up to 2 lines, integrated Gigabit Ethernet switch, Power over Ethernet (PoE) support, full-duplex speakerphone, headset port, and advanced telephony features. It is designed for reliable voice communication in enterprise environments. 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 Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Grayscale display, Handset, Speakerphone, Line buttons, Navigation cluster, Softkeys, Headset port, Ethernet ports.

Feature	Description
Display	High-resolution grayscale LCD with backlight
Lines	Support for up to 2 lines with dedicated buttons
Network	Dual Gigabit Ethernet ports (PC and Network)
Power	Power over Ethernet (PoE) or optional power adapter
Audio	Full-duplex speakerphone, wideband audio support
Headset Port	3.5mm port for headset connection
Hold/Resume	Button to place calls on hold
Transfer	Button to transfer calls to another extension
Conference	Button to set up multi-party conference calls
Volume Control	Rockers for handset, speaker, and ringer volume

Installation

Unpack and inspect contents. Place on stable desk surface.

Connect to network: Plug Ethernet cable from switch into NETWORK port.
Connect PC (optional): Plug Ethernet cable from PC into PC port.
Connect handset: Attach coiled handset cord to handset and phone base.
Power the phone: Use PoE from switch or connect optional power adapter.

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

First-Time Setup

Phone will boot and attempt to register with the call control system.

Check registration: Observe display for extension number and status.
Set preferences: Use Settings menu to configure time, date, ringtone.
Configure voicemail: Follow prompts or contact administrator for setup.
Test call: Lift handset and dial another extension to verify audio.

CAUTION! Do not disconnect during boot process. Contact system administrator for network configuration.

Specifications

Display: Grayscale, 132 x 48 pixels with backlight.
Protocols: SIP, SCCP (Skinny).
Audio Codecs: G.711, G.729, G.722 (wideband).
Network Ports: 2 x 10/100/1000 Ethernet (RJ-45).
Power: 802.3af PoE (Class 2) or 12V DC power adapter.
Headset: 3.5mm headset port (CTIA standard).
Dimensions: 8.3 x 10.2 x 6.1 inches (approx).
Operating Temp: 32°F to 104°F (0°C to 40°C).

Controls and Settings

Access menus via NAVIGATION cluster and softkeys. Buttons: Line 1, Line 2, Hold, Transfer, Conference, Volume rocker, Mute, Headset, Speakerphone.

Softkeys: Context-sensitive buttons below display for options like Redial, Call History, Settings.

Settings Menu: Navigate to configure Ringtone, Time Format, Screen Contrast, Network Settings (admin only). Audio: Adjust handset, speaker, ringer volume. Display: Set backlight timeout, contrast. Network: View IP address, status (admin).

Connecting Devices

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

Ensure phone is powered off before connecting cables.
Match Ethernet cables to correct ports (NETWORK vs PC).
For headset, plug in fully until click is heard.

Tip: Use quality CAT5e or higher cables for Gigabit performance.

Advanced Features

Supports call hold, transfer, conference, redial, call history.

Make call: Lift handset or press Speakerphone, dial number.
Answer call: Lift handset, press Speakerphone, or press flashing line button.
Hold: Press Hold button; resume by pressing same line button.
Transfer: During call, press Transfer, dial target, press Transfer again or hang up.
Conference: During call, press Conference, dial second party, press Conference again.
Call History: Press the "History" softkey to view missed, received, placed calls.
Headset Mode: Press Headset button to toggle headset on/off.
Mute: Press Mute button during call to mute microphone.

WARNING! Do not use excessive force on buttons or handset cord.

Accessibility Features

Visual Alerts: Flashing LED for incoming calls. Audio: Adjustable ringer volume and tone. Hearing Aid Compatible (HAC) handset.

Care & Cleaning

Unplug power before cleaning. Use slightly damp, lint-free cloth. Do not use liquids or aerosols directly on phone.

CAUTION! Avoid moisture entering ports or handset. Keep away from heat sources.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business use. ICES-003: Complies with Canadian EMI standards. Copyright © 2025 Cisco Systems, Inc. or its affiliates. For support, visit www.cisco.com or contact Cisco Technical Assistance Center.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display/power	Power/PoE issue	Check Ethernet cable; verify PoE switch is enabled; try power adapter.
No dial tone	Network/registration	Check NETWORK cable; verify phone is registered on call server.
Poor audio quality	Network/device	Check for network congestion; ensure handset cord is fully connected.
Can't hear ring	Volume settings	Press Volume Up button for ringer; check Ringtone setting in menu.
Headset not working	Connection/settings	Ensure headset is fully plugged in; press Headset button to activate.

Reset: For factory reset, consult administrator or hold # key during boot (erases configuration).

Service: Contact Cisco TAC or your system administrator.