Cisco Phone CP 8851 Manual

The Cisco CP 8851 is a high-performance Unified IP Phone featuring a large color display, support for up to 12 lines, built-in Gigabit Ethernet, Power over Ethernet (PoE) support, HD voice quality, Bluetooth headset compatibility, and integration 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: Large color LCD display, Handset, Speakerphone, Navigation cluster, Softkeys, Volume rocker, Headset port, Ethernet ports.

Feature	Description
Display	5-inch color LCD with backlight
Lines/Speed Dials	Supports up to 12 lines and speed dials
Network	Dual Gigabit Ethernet ports (10/100/1000)
Power	IEEE 802.3af PoE or optional power adapter
Audio	HD wideband audio, built-in speakerphone
Bluetooth	Bluetooth 4.0 for headset connectivity
Headset Port	3.5mm headset jack for wired headsets
USB Port	USB 2.0 port for accessories
Conference	Built-in conference bridge capability
Security	802.1X authentication, secure boot

Installation

Unpack and inspect contents. Place phone on stable surface.

Connect to Network: Use Ethernet cable to connect LAN port to switch.
Power the Phone: Use PoE from switch or connect optional power adapter.
Connect Handset: Plug handset cord into handset port.
Optional Headset: Plug into headset jack or pair Bluetooth headset.

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

First-Time Setup

Phone will boot and register with Cisco Unified Communications Manager.

Network Registration: Phone obtains IP address via DHCP and registers with CUCM.
Verify Registration: Check for extension number on display.
Set User Preferences: Press Settings button to configure language, ringtones, etc.
Program Speed Dials: Use directory or settings to assign speed dial numbers.

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

Specifications

Display: 5-inch color TFT, 480 x 272 pixels.
Network Interfaces: Dual 10/100/1000 Ethernet ports with PoE.
Protocols: SIP, SCCP, 802.1X, LLDP, CDP.
Audio Codecs: G.711, G.722, G.729, iLBC, Opus.
Bluetooth: Bluetooth 4.0 for headset profile (HFP).
Power Consumption: Max 6.9W (PoE), 5.5W (power adapter).
Operating Temperature: 32°F to 104°F (0°C to 40°C).
Supported Languages: English, Spanish, French, German, and more.

Controls and Settings

Access settings via physical buttons or touch screen interface.

Physical Controls: Mute, Headset, Speakerphone, Volume rocker, Navigation cluster, Softkeys, Hold, Transfer, Conference, Settings.

Phone Settings: Language, Time/Date, Ringtone, Screen brightness, Network configuration. User Preferences: Call forwarding, Voicemail setup, Speed dials, Bluetooth pairing. Administrator Settings: Network setup, Security, Firmware upgrade (via CUCM).

Connecting Devices

Network: LAN port to switch. PC: Use PC port to connect computer. Headset: Wired or Bluetooth.

Turn off phone before connecting additional devices.
Connect PC to PC port for shared network connection.
For Bluetooth headset: Enable Bluetooth in settings, put headset in pairing mode, select from phone.

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

Using Phone Features

Supports basic and advanced telephony features.

Make Call: Lift handset or press Speakerphone, dial number, press Dial softkey.
Answer Call: Lift handset, press Answer softkey, or press Speakerphone.
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 third party, press Conference again.
Voicemail: Press Messages button or dial voicemail access number.
Call History: Press Directories, select Recent Calls.
Speed Dial: Press assigned speed dial button or use speed dial codes.

WARNING! Do not use phone while driving. Use hands-free options when appropriate.

Accessibility Features

Hearing Aid Compatibility: TIA-1083 compliant. Visual Alerts: Flashing LED for incoming calls. Audio Adjustments: Separate volume controls for handset, headset, speakerphone, ringer. High-Contrast Display: Adjustable screen contrast in settings.

Care & Cleaning

Unplug power before cleaning. Use slightly damp, lint-free cloth. Do not use liquids or aerosols directly on phone.

CAUTION! Avoid abrasive cleaners. Keep liquids away from openings.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business use. ICES-003: Complies with Canadian EMI regulations. CE Marked: Complies with European directives. For support, visit www.cisco.com or contact Cisco Technical Assistance Center (TAC).

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display/power	Power source	Check PoE switch or power adapter; ensure cable is secure.
No network connectivity	Cable/DHCP	Check Ethernet cable; verify DHCP server is reachable.
No audio	Volume settings	Check mute; adjust volume; verify handset/headset connection.
Cannot register	Configuration	Verify CUCM configuration; check TFTP server settings.
Bluetooth not pairing	Distance/settings	Ensure headset is in pairing mode; check Bluetooth is enabled on phone.

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

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