Cisco CP-8811 User Manual

The Cisco CP-8811 is a business-class IP phone designed for small to medium-sized businesses, offering high-quality voice communication, a clear graphical display, support for Power over Ethernet (PoE), multiple line appearances, and integration with Cisco Unified Communications Manager (CUCM) and Cisco Business Edition. 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: Graphical LCD display, Handset, Speakerphone, Ethernet ports, Power adapter port, Headset jack.

Feature	Description
Graphical LCD display	128 x 64 pixel backlit display for call information and menus
Handset	Standard handset with hearing aid compatible (HAC) receiver
Speakerphone	Full-duplex speakerphone for hands-free calls
Ethernet ports	10/100BASE-T switch with PC port and LAN port
Power over Ethernet (PoE)	IEEE 802.3af Class 2 compliant; powered via LAN cable
Headset jack	2.5 mm headset jack for optional headset connection
Volume control	Adjusts handset, speakerphone, and ringer volume
Line keys	Two line keys for multiple call appearances
Feature keys	Hold, Transfer, Conference, Messages, Settings
Navigation cluster	Four-way navigation and Select button for menu access

Installation

Unpack and inspect contents. Place on stable surface.

Connect to network: Plug Ethernet cable from switch/router into LAN port.
Connect PC (optional): Plug PC Ethernet cable into PC port.
Connect handset: Plug coiled handset cord into handset jack.
Apply power: Connect power adapter or use PoE from switch.

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

First-Time Setup

Power on phone; follow on-screen prompts.

Network registration: Phone will attempt to register with CUCM or provisioning server.
Set language: Press Settings button, navigate to User Preferences > Language.
Configure time and date: Settings > Time and Date (usually set via network).
Set up voicemail: Press Messages button and follow prompts.

CAUTION! Do not unplug during firmware upgrade. Ensure proper ventilation.

Specifications

Display: 128 x 64 pixel graphical LCD with backlight.
Network: 10/100BASE-T Ethernet, IEEE 802.3af PoE Class 2.
Audio: Wideband audio support (G.722), acoustic echo cancellation.
Protocols: SIP (Session Initiation Protocol), SCCP (Skinny Call Control Protocol).
Power: 48 VDC via PoE or external power adapter.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Supported Codecs: G.711, G.722, G.729a, iLBC.
Dimensions: 8.3 x 9.1 x 7.1 in (210 x 230 x 180 mm).

Controls and Settings

Access menu via Settings button. Front Panel: Speakerphone, Volume control, Navigation cluster, Line keys, Feature keys.

Buttons: Hold, Transfer, Conference, Messages, Settings, Speakerphone, Mute, Headset.

Settings Menu: User Preferences (Language, Ringtone, Screen Contrast), Network Configuration (IP address, DHCP), Phone Information (Model, firmware). Audio: Adjust handset, speaker, ringer volume. Display: Set contrast, backlight timeout.

Connecting Devices

Network: LAN port to switch. PC: PC port to computer. Headset: 2.5 mm jack.

Turn off phone before connecting cables.
Match cables to ports (Ethernet to LAN, handset to handset jack).
For PoE, ensure switch provides 802.3af power.

Tip: Use Cat5e or higher Ethernet cables for best 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 Answer softkey.
Hold: Press Hold button to place call on hold.
Transfer: During call, press Transfer, dial target number, press Transfer again.
Conference: During call, press Conference, dial second party, press Conference again.
Voicemail: Press Messages button to access voicemail.
Call history: Press Navigation button to view missed, received, placed calls.
Speed dial: Assign numbers to speed dial keys via Settings menu.

WARNING! Do not use damaged handset cords. Keep liquids away from phone.

Accessibility Features

Hearing Aid Compatible (HAC) handset. Visual alerts via LED on handset. Adjustable ringer volume and tone. Large font display option in Settings.

Care & Cleaning

Unplug before cleaning. Use dry, soft cloth; mild detergent if needed. Avoid abrasive cleaners.

CAUTION! Do not spray liquids directly on phone. Keep away from extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. ICES-003: Complies with Canadian EMI regulations. CE marked for European Union. For support, visit www.cisco.com or contact Cisco Technical Assistance Center (TAC). Copyright © 2025 Cisco Systems, Inc. All rights reserved.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power adapter/PoE	Check power adapter connection; ensure PoE switch is powered.
No network connection	Cable/DHCP	Check Ethernet cable; verify DHCP server is available.
No dial tone	Registration/line	Check phone registration status on CUCM; verify line configuration.
Poor audio quality	Network/codec	Check network for packet loss; verify codec configuration.
Display blank	Power/backlight	Check power; adjust display contrast in Settings.

Reset: Press and hold # key during boot for factory reset (erases configuration).

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