Cisco Phone CP-8851 User Manual

The Cisco CP-8851 is a high-performance, full-featured collaboration endpoint designed for executive and manager workspaces. It features a large color touchscreen, high-definition voice and video, Bluetooth and Wi-Fi support, integrated Gigabit Ethernet switch, and support for a wide range of calling features. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Large 7-inch color touchscreen, Handset with HD voice, Speakerphone, Bluetooth and Wi-Fi antennas, Gigabit Ethernet ports, Headset port, USB port.

Installation

Unpack and inspect contents. Place on stable desk surface.

1. Connect to Network: Plug Ethernet cable from switch into the NETWORK port on the phone.
2. Connect PC (Optional): Plug PC Ethernet cable into the PC port on the phone.
3. Connect Handset: Plug the handset cord into the HANDSET port.
4. Connect Power: Use the provided power adapter or ensure PoE is active on the network switch.
5. Connect Headset (Optional): Plug wired headset into the HEADSET port.

WARNING! Use only approved power sources. Ensure cables are not pinched or damaged.

First-Time Setup

Power on phone; follow on-screen prompts.

1. Network Registration: Phone will attempt to register with your call control system (CUCM, CME).
2. Configure Settings: Use the touchscreen to set language, time zone, and user preferences.
3. Set Up Accounts: Enter extension number and credentials as provided by your administrator.
4. Test Features: Place a test call to verify audio and network connectivity.

CAUTION! Do not place the phone in direct sunlight or near heat sources.

Specifications

• Display: 7-inch capacitive color touchscreen (800 x 480 pixels).
• Audio: HD wideband audio (G.722), Acoustic Echo Cancellation (AEC).
• Video: H.264, VP8 support for video calls.
• Network: 10/100/1000 Mbps Ethernet, 802.11a/b/g/n/ac Wi-Fi, Bluetooth 4.2.
• Power: 802.3af PoE (Class 3) or 48 VDC power adapter.
• Ports: Gigabit Ethernet (Network, PC), Headset, USB 2.0, Handset.
• Supported Protocols: SIP, SCCP, HTTP/HTTPS, LDAP, TFTP.
• Operating Temperature: 32°F to 104°F (0°C to 40°C).

Controls and Settings

Access settings via the touchscreen menu or physical buttons. Front Panel: Mute, Volume, Speakerphone, Navigation cluster.

Touchscreen Interface: Home screen with line status, contacts, call history, and settings. Physical Keys: MUTE, VOLUME UP/DOWN, SPEAKERPHONE, NAVIGATION CLUSTER.

Audio Settings: Ringtone volume, handset/speakerphone gain, headset settings. Display: Brightness, contrast, screensaver timeout. Network: Wi-Fi setup, Bluetooth pairing, network statistics. Phone Settings: Language, date/time format, user information.

Connecting Devices

Network: Ethernet cable to NETWORK port. PC: Ethernet cable to PC port. Headset: Wired to HEADSET port or Bluetooth pairing.

1. Turn off phone before connecting wired accessories.
2. For Bluetooth: Enable Bluetooth in settings, put device in pairing mode, select from phone's list.
3. For Wi-Fi: Select network from list and enter password.

Tip: Use quality Cat5e or higher Ethernet cables for best Gigabit performance.

Advanced Calling Features

Supports hold, transfer, conference, forward, park, and more.

1. Make a Call: Lift handset or press Speakerphone, dial number, or select contact.
2. Answer a Call: Lift handset, press Speakerphone, or tap Answer on screen.
3. Hold: Press Hold button during a call.
4. Transfer: Press Transfer, dial target number, press Transfer again.
5. Conference: Press Conference, dial first participant, press Conference again, dial second participant.
6. Forward Calls: Access call forwarding settings via phone menu or web interface.
7. Call History: View missed, received, and placed calls from the history screen.
8. Speed Dial: Assign numbers to programmable line keys.

WARNING! Do not use the phone while driving. Use hands-free options responsibly.

Accessibility Features

Visual Alerts: Flashing LED for incoming calls. Audio Adjustments: Independent volume controls for ringer, handset, speaker. Screen Reader: Text-to-speech support for visually impaired users (if enabled by administrator).

Care & Cleaning

Unplug power before cleaning. Use a soft, dry, lint-free cloth. For stubborn marks, lightly dampen cloth with water. Do not use liquids directly on the phone.

CAUTION! Do not use abrasive cleaners, solvents, or compressed air. Avoid getting moisture in openings.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. ICES-003: Complies with Canadian EMI standards. This device complies with Part 68 of the FCC rules. Ringer equivalence number (REN): 0.8B. For detailed regulatory compliance information, visit www.cisco.com/go/telecompliance. Copyright © 2025 Cisco Systems, Inc. All rights reserved.

Troubleshooting

Reset: Settings > System > Reset to Factory Defaults (requires administrator password).

Support: Contact your system administrator or visit www.cisco.com/support.