Cisco CP 8811 Phone Manual

The Cisco CP 8811 is a business-class IP phone designed for desk use, featuring a high-resolution color display, support for multiple lines, Power over Ethernet (PoE), integrated Gigabit Ethernet switch, HD voice quality, and compatibility with Cisco Unified Communications Manager. 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 color display, Handset, Speakerphone, Ethernet ports, Power adapter port, Headset jack.

FeatureDescription
DisplayHigh-resolution color LCD with backlight
HandsetFull-duplex speakerphone with HD voice
Ethernet PortsTwo 10/100/1000 Mbps ports (LAN and PC)
Power over Ethernet (PoE)IEEE 802.3af compliant for single-cable power
Headset Jack3.5mm port for wired headset connection
Line KeysProgrammable buttons for multiple lines/features
Volume ControlDedicated buttons for handset, speaker, and ringer
Navigation ClusterDirectional pad for menu navigation
Mute ButtonRed LED indicates when microphone is muted
Power ButtonTurns phone on/off (standby mode)

Installation

Unpack and inspect contents. Place on stable desk surface.

  1. Connect to network: Use Ethernet cable from switch to phone's LAN port.
  2. Connect PC: Use second Ethernet cable from phone's PC port to computer.
  3. Connect handset: Plug coiled handset cord into phone base.
  4. Power the phone: Use PoE from switch or connect external power adapter.

WARNING! Use only approved power adapter. Ensure cables are securely connected to avoid damage.

First-Time Setup

Power on phone; follow on-screen prompts.

  1. Network registration: Phone will attempt to obtain IP address via DHCP.
  2. Configure with CUCM: Phone should auto-register with Cisco Unified Communications Manager if pre-provisioned.
  3. Set language: Press Settings button > User Preferences > Language.
  4. Adjust settings: Configure time zone, ringtone, volume via Settings menu.

CAUTION! Do not disconnect during firmware upgrade. Ensure stable network connection.

Specifications

Controls and Settings

Access menu via NAVIGATION cluster or dedicated buttons.

Front Panel: LINE keys, NAVIGATION cluster, MUTE, HEADSET, SPEAKERPHONE, VOLUME controls.

Settings Menu: Network configuration, Audio settings (ringer, speaker, handset volume), Display (contrast, backlight timeout), Phone model information, Firmware version.

Call Features: Hold, Transfer, Conference, Forward, Voicemail access via softkeys or dedicated buttons.

Connecting Devices

Network: LAN port to switch. PC: PC port to computer. Headset: 3.5mm jack.

  1. Turn off phone before connecting additional devices.
  2. Match cables to correct ports (Ethernet to LAN/PC, headset to headset jack).
  3. Power on phone after all connections are secure.

Tip: Use Cat5e or better Ethernet cables for Gigabit performance.

Using Phone Features

Supports basic and advanced telephony features.

  1. Make call: Lift handset or press SPEAKERPHONE, dial number.
  2. Answer call: Lift handset, press SPEAKERPHONE, or press Answer softkey.
  3. Hold: Press Hold button during active call.
  4. Transfer: Press Transfer, dial target number, press Transfer again.
  5. Conference: Press Conference, dial participant, press Conference again to merge.
  6. Voicemail: Press Messages button or dial voicemail access number.
  7. Adjust volume: Use VOLUME buttons during call for handset/speaker, or in idle for ringer.
  8. Mute: Press MUTE button (red LED indicates active).

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

Accessibility Features

Visual Alerts: Flashing LED for incoming calls. Audio Adjustments: Independent volume controls for ringer, handset, speaker. High-Contrast Display: Adjustable screen settings in menu.

Care & Cleaning

Unplug power before cleaning. Use slightly damp, lint-free cloth; no abrasive cleaners.

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

Regulatory Information

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

Troubleshooting

SymptomPossible CauseCorrective Action
No powerPoE/Power adapterCheck Ethernet cable/PoE switch; verify power adapter connection.
No network connectionCable/DHCPEnsure LAN cable is secure; check switch port; verify DHCP server.
No dial toneRegistration/ConfigurationCheck phone registration status on CUCM; verify line configuration.
Poor audio qualityNetwork/CodecCheck network for packet loss; verify codec configuration matches network.
Display issuesSettings/PowerAdjust contrast/brightness in settings; restart phone.

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

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

Cisco CP 8811 Phone Manual © - All Rights Reserved 2025