Cisco Phone System User Manual CP-8851

The Cisco CP-8851 is a high-performance, full-featured IP phone designed for demanding business environments. It features a large color touchscreen, support for up to 12 lines, integrated Gigabit Ethernet switch, PoE support, HD audio, Bluetooth, and Wi-Fi capabilities. 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 Call Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Large color touchscreen, Handset, Speakerphone, Bluetooth/Wi-Fi antennas, Ethernet ports, Power connector, Headset port.

Feature	Description
Large Color Touchscreen	5-inch capacitive touch display for call management and applications
Gigabit Ethernet Ports	Two ports for network connection and daisy-chaining a computer
Power over Ethernet (PoE)	Supported via IEEE 802.3af/at
HD Voice	Wideband audio support for crystal-clear calls
Bluetooth	For wireless headset connectivity
Wi-Fi	Dual-band 802.11a/b/g/n/ac support
Headset Port	3.5mm jack for wired headset connection
Speakerphone	Full-duplex speakerphone with acoustic echo cancellation
Line Support	Up to 12 lines with multiple call appearances
Programmable Keys	Configurable for speed dial, line status, and features

Installation

Unpack and inspect contents. Place on stable surface.

Connect to Network: Use Ethernet cable to connect the phone's SW port to your network switch.
Connect Computer (Optional): Use second Ethernet cable from PC port to your computer.
Power the Phone: Use PoE from switch or connect the optional power adapter to the DC port.
Connect Handset: Plug the handset cable into the handset port.
Connect Headset: Optional 3.5mm headset to headset port.

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

First-Time Setup

Power on phone; follow on-screen prompts.

Network Configuration: Phone will attempt DHCP. If static IP is required, configure via settings menu.
Phone Registration: Enter call server address provided by your administrator.
User Configuration: Enter extension number and authentication credentials.
Personalize Settings: Set language, time zone, ringtone, and display preferences.
Test Call: Place a test call to verify audio quality and connectivity.

CAUTION! Ensure proper ventilation; do not block air vents on phone.

Specifications

Display: 5-inch capacitive color touchscreen (480 x 800 pixels).
Network: Dual Gigabit Ethernet ports, PoE (802.3af/at), Wi-Fi, Bluetooth 4.2.
Audio: HD wideband audio, full-duplex speakerphone, acoustic echo cancellation.
Protocols: SIP, SCCP, IEEE 802.1X, LLDP-MED, CDP.
Security: 802.1X authentication, TLS, SRTP, secure boot.
Power: PoE (Class 3) or 12V DC power adapter.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Supported Codecs: G.711, G.722, G.729, iLBC, Opus.

Controls and Settings

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

Touchscreen: Home screen with call lines, contacts, call history, settings. Physical Buttons: Hold, Transfer, Conference, Headset, Mute, Volume.

Settings Menu: Network configuration, Audio settings (ringer volume, handset/speaker gain), Display settings (brightness, timeout), Phone settings (date/time, language), Bluetooth/Wi-Fi setup, Security settings. Programmable Keys: Configure via web interface or call server for speed dial, BLF, call park, etc.

Connecting Devices

Network: Ethernet to SW port. Computer: Ethernet to PC port. Headset: Wired to headset port or Bluetooth pairing.

Turn off phone before connecting wired accessories.
For Bluetooth: Enable in settings, put headset in pairing mode, select from discovered devices.
For Wi-Fi: Select network from available list, enter credentials.

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

Advanced Call Features

Supports enterprise calling features via Cisco Unified Communications Manager or compatible SIP server.

Make Call: Lift handset or press Speakerphone, dial number.
Answer Call: Lift handset, press Answer softkey, or press Speakerphone.
Hold: Press Hold button during active call.
Transfer: Press Transfer, dial target number, press Transfer again.
Conference: During call, press Conference, dial second party, press Conference again to merge.
Call Forward: Configure via settings or dial codes (*72 forward all).
Voicemail: Press Messages button or dial voicemail access number.
Speed Dial: Assign to programmable keys or use directory.

WARNING! Do not use phone with wet hands. Keep liquids away from device.

Accessibility Features

Visual Alerts: Flashing LED for incoming calls. Audio Adjustments: Independent volume controls for ringer, handset, speaker. Hearing Aid Compatible: Handset rated M4/T4. Large Text: Adjustable font size in display settings. High-Contrast Mode: Available in display settings.

Care & Cleaning

Unplug before cleaning. Use slightly damp, lint-free cloth. Do not use abrasive cleaners or sprays.

CAUTION! Do not spray liquids directly on phone. Avoid extreme temperatures and humidity.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. ICES-003: Complies with Canadian EMI regulations. CE Mark: Complies with European directives. Copyright © 2023 Cisco Systems, Inc. All rights reserved. For support, visit www.cisco.com/support or contact your authorized Cisco partner.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source/cable	Check PoE switch or power adapter; ensure cable is securely connected.
No network connectivity	Cable/DHCP	Check Ethernet cable; verify DHCP server is reachable; check VLAN configuration.
No audio	Volume/mute	Check volume settings; ensure mute is off; verify handset is properly connected.
Cannot register to server	Configuration	Verify server address, extension, and credentials; check network firewall settings.
Poor call quality	Network/QoS	Check network bandwidth; ensure QoS is configured properly; test with wired connection.
Bluetooth not connecting	Pairing mode/distance	Ensure headset is in pairing mode; keep within 3 feet during pairing; remove interference.
Touchscreen unresponsive	Calibration	Restart phone; perform touchscreen calibration via settings menu.

Reset: Settings > Admin Settings > Reset Settings (factory reset).

Service: Contact Cisco Technical Support or your authorized service provider.