Cisco CP-8851 User Manual

The Cisco CP-8851 is a high-performance conference phone designed for medium to large meeting rooms. It features wideband audio, a 12-foot microphone pickup range, an integrated 5-inch color touch screen, support for up to 5 expansion microphones, and advanced noise reduction technology. It supports Power over Ethernet (PoE) and includes Bluetooth for headset connectivity. 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 the Phone 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main conference unit with touch screen, Handset, Ethernet port, Expansion microphone ports, Headset jack, USB port.

Feature	Description
Wideband Audio	High-definition voice for clear conference calls
5-inch Color Touch Screen	Intuitive interface for call management and settings
Expansion Microphone Ports	Supports up to 5 external mics for larger rooms
Power over Ethernet (PoE)	Simplified power and network connection
Bluetooth	Wireless headset connectivity
Noise Reduction	Advanced DSP to minimize background noise
USB Port	For software updates or accessory connection
Headset Jack	For private listening and speaking
Speakerphone	Full-duplex audio for natural conversation
Conference Bridge	Merge up to 5 calls into a single conference

Installation

Unpack and inspect contents. Place on stable conference table.

Connect to network: Use Ethernet cable to connect to PoE switch or injector.
Connect expansion microphones: Plug into dedicated ports on back of unit.
Power on: Phone will boot automatically when PoE is provided.
Optional: Connect headset via Bluetooth or wired jack.

WARNING! Ensure the phone is placed on a flat, stable surface. Use only approved power sources.

First-Time Setup

Phone will boot and attempt to register with your call control system.

Network configuration: May be automatic via DHCP or require manual entry.
Phone registration: Enter extension number and credentials as prompted.
Set language: In Settings menu, select preferred language (default ENGLISH).
Adjust audio settings: Use Audio settings to calibrate microphone and speaker levels.
Test call: Place a test call to verify audio quality and connectivity.

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

Specifications

Display: 5-inch color touch screen, 480 x 272 pixels.
Audio: Full-duplex wideband (G.722), noise reduction, acoustic echo cancellation.
Microphone Pickup: Up to 12-foot radius, expandable with additional mics.
Network: 10/100/1000 Mbps Ethernet, IEEE 802.3af PoE.
Wireless: Bluetooth 4.2 for headsets.
Ports: Gigabit Ethernet, 5x expansion mic ports, USB 2.0, headset jack.
Supported Protocols: SIP, SCCP, HTTP/HTTPS, TFTP.
Power Source: 802.3af PoE or optional AC adapter.
Operating Temperature: 32°F to 104°F (0°C to 40°C).

Controls and Settings

Access settings via touch screen or web interface. Front Panel: Touch screen, Mute button, Volume rocker, Navigation buttons.

Touch Screen Interface: Home screen with call controls, contacts, history, settings.

Audio Settings: Microphone gain, speaker volume, noise reduction level, equalizer presets. Network Settings: IP configuration, VLAN, QoS, SIP settings. Display Settings: Brightness, contrast, screen timeout. Features: Call forward, conference bridge setup, Bluetooth pairing, security settings.

Connecting Devices

Network: Ethernet to PoE switch. Expansion Mics: Connect to rear ports. Headset: Bluetooth or wired.

Ensure phone is powered off before connecting accessories.
Match cables to correct ports (Ethernet to network, mics to MIC ports).
Power on phone; accessory detection is automatic.
Pair Bluetooth headset via Settings > Bluetooth.

Tip: For best audio quality, place expansion microphones evenly around the conference table.

Using the Phone

Supports voice calls, conferences, and call management.

Place a call: Dial number on keypad or select from contacts/history.
Answer a call: Tap Answer on screen or press speakerphone button.
Mute: Press physical Mute button or screen icon; red LED indicates mute active.
Adjust volume: Use volume rocker during a call.
Conference calls: Merge active calls via Conference button.
Hold: Place call on hold with Hold button.
Transfer: Blind or attended transfer via Transfer button.
Headset use: Toggle between speakerphone and headset via Headset button.

WARNING! Do not expose to liquids. Keep vents clear for proper cooling.

Accessibility Features

Visual Alerts: Flashing LED for incoming calls. Audio Adjustments: Customizable tone and volume for hearing assistance. Screen Reader: Compatible with external screen reader software via USB. Large Font Option: Available in display settings.

Care & Cleaning

Unplug from power before cleaning. Use slightly damp, lint-free cloth for screen and body. Do not use abrasive cleaners or sprays.

CAUTION! Avoid getting moisture into ports or openings. Do not use compressed air directly on microphones.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. ICES-003: Complies with Canadian EMI standards. CE Mark: Conforms to European safety and EMC directives. For support, visit www.cisco.com or contact Cisco Technical Assistance Center (TAC).

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	PoE issue or cable	Check Ethernet cable and PoE switch; try AC adapter.
No audio on calls	Mute active or volume low	Check mute status; increase volume; verify audio settings.
Cannot register	Network or config error	Verify IP settings, SIP credentials, and network connectivity.
Poor audio quality	Network QoS or mic placement	Enable QoS on network; reposition microphones.
Touch screen unresponsive	Software issue	Restart phone; check for firmware updates.

Reset: Settings > System > Reset to factory defaults if needed.

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