Cisco IP Phone 8811 Manual

The Cisco IP Phone 8811 is a business-grade VoIP desk phone featuring a high-resolution grayscale display, support for Session Initiation Protocol (SIP), Power over Ethernet (PoE), integrated Gigabit Ethernet switch, hands-free speakerphone, headset port, and programmable line/feature keys. 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. Using Phone Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Grayscale display, Handset, Speakerphone, Programmable keys, Ethernet ports, Headset jack.

Feature	Description
Display	High-resolution grayscale LCD with adjustable contrast
Network Ports	Two 10/100/1000 Ethernet ports (LAN, PC) with integrated switch
Power	IEEE 802.3af PoE or optional external power adapter
Audio	Full-duplex speakerphone, wideband audio support, headset port
Protocols	SIP firmware support for VoIP call control
Programmable Keys	Four line/feature keys customizable via web interface
Security	Secure boot, image validation, encrypted configuration files
Headset Port	3.5mm jack for wired headset connectivity
Volume Control	Dedicated buttons for handset, speaker, and ringer volume
Messages Button	Direct access to voicemail and message waiting indicator

Installation

Unpack and inspect contents. Place on stable desk surface.

Connect to network: Use Ethernet cable to connect LAN port to switch; PC port to computer if needed.
Power the phone: Use PoE from switch or connect external power adapter to power port.
Connect handset: Plug coiled handset cord into handset jack.
Optional headset: Plug into 3.5mm headset jack.

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

First-Time Setup

Power on phone; wait for boot sequence.

Network registration: Phone should obtain IP via DHCP; check display for IP address.
Configure SIP: Access web interface via IP to enter SIP server details provided by administrator.
Set preferences: Use phone settings menu for time/date, ringtone, display contrast.
Test call: Make internal/external test call to verify audio quality.

CAUTION! Do not disconnect during firmware upgrade. Follow administrator guidance for SIP configuration.

Specifications

Display: Grayscale, 3.5-inch LCD.
Network: Dual 10/100/1000 Ethernet ports, IEEE 802.3af PoE.
Audio: HD voice, G.711, G.729 codecs; acoustic echo cancellation.
Protocols: SIP (Session Initiation Protocol).
Programmable Keys: Four physical keys with LED indicators.
Power Source: PoE (Class 2) or 12V DC external adapter.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Compliance: FCC Part 15, UL/CSA safety standards.

Controls and Settings

Access settings via phone menu or web interface. Front Panel: Speakerphone, Messages, Hold, Transfer, Volume, Navigation cluster.

Softkeys: Context-sensitive functions shown on display (e.g., Redial, Conf, More).

Phone Settings: Time/date, ringtone selection, display contrast, network configuration. Web Interface: SIP settings, programmable key assignment, security, firmware upgrade. Audio: Adjust handset, speaker, ringer volume; enable/disable speakerphone.

Connecting Devices

Network: LAN port to switch; PC port to computer. Audio: Handset, headset, external speaker if supported.

Power off phone before connecting cables.
Use Cat5e or higher Ethernet cables for network connections.
For headset, ensure compatibility with 3.5mm jack.

Tip: Label cables for easy identification during maintenance.

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 Answer softkey.
Hold: Press Hold button to place call on hold.
Transfer: During call, press Transfer, dial target, press Transfer again.
Conference: During call, press Conf, dial second party, press Conf to merge.
Voicemail: Press Messages button to access voicemail.
Redial: Press Redial softkey to call last dialed number.
Programmable keys: Assign speed dial, line appearances, or features via web interface.

WARNING! Avoid using phone during electrical storms. Use headset for extended calls.

Accessibility Features

Visual: Adjustable display contrast, large font option. Audio: Volume boost, distinct ringtones. Physical: Tactile key feedback, headset compatibility for hands-free operation.

Care & Cleaning

Unplug power before cleaning. Use slightly damp cloth for exterior; dry immediately. Do not use liquids or aerosols on display or keys.

CAUTION! Do not disassemble phone. Keep away from moisture and extreme temperatures.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. Copyright © Cisco Systems, Inc. All rights reserved. For support, visit www.cisco.com or contact Cisco Technical Assistance Center (TAC).

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	PoE/Power adapter	Check Ethernet cable/PoE switch; try external power adapter.
No network	Cable/DHCP	Verify cable connections; restart phone; check DHCP server.
No dial tone	SIP registration	Confirm SIP settings in web interface; contact administrator.
Poor audio quality	Network/configuration	Check network latency; verify audio codec settings.
Display blank	Power/contrast	Ensure power; adjust contrast in settings menu.

Reset: Press and hold # key during boot for factory reset (use caution).

Service: Cisco TAC: 1-800-553-2447; www.cisco.com/support