Cisco CP 8851 Manual

The Cisco CP 8851 is a high-performance IP phone designed for business environments, featuring a large color display, support for multiple lines, advanced audio capabilities, Power over Ethernet (PoE), Gigabit Ethernet, and integration with Cisco Unified Communications Manager. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Large color display, Handset, Speakerphone, Keypad, Network ports, Headset port.

Feature	Description
Display	High-resolution color screen for call information and menus
Handset	Wideband audio for clear voice quality
Speakerphone	Full-duplex speakerphone for hands-free calls
Keypad	Backlit keys for easy dialing in low light
Network Ports	Gigabit Ethernet with PoE support
Headset Port	For connecting a wired headset
Line Keys	Multiple programmable line keys
Volume Control	Dedicated buttons for handset, speaker, and ringer volume
MUTE	Mutes the microphone during a call
POWER	Connects to PoE or optional power adapter

Installation

Unpack and inspect contents. Place on stable surface.

1. Connect to Network: Use Ethernet cable to connect the phone's LAN port to your network switch.
2. Connect Handset: Plug the handset cord into the dedicated jack on the phone.
3. Connect Optional Headset: Plug a headset into the headset port if desired.
4. Power the Phone: Use Power over Ethernet (PoE) or connect the optional power adapter.

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

First-Time Setup

Power on the phone; follow on-screen prompts.

1. Network Registration: The phone will attempt to register with Cisco Unified Communications Manager (CUCM).
2. Configure Settings: Use the phone's settings menu to set language, time zone, and network preferences.
3. Line Assignment: Assign extension numbers to line keys as configured by your administrator.
4. Test Call: Place a test call to verify audio quality and connectivity.

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

Specifications

• Display: High-resolution color LCD.
• Audio: Wideband audio support (G.722), HD Voice.
• Network: Gigabit Ethernet, 802.3af PoE.
• Protocols: SIP, SCCP support.
• Ports: 10/100/1000 Ethernet, headset, handset.
• Power: PoE (802.3af Class 2) or optional power adapter.
• Operating Temp: 32°F to 104°F (0°C to 40°C).
• Compliance: FCC Part 15, CE, RoHS.

Controls and Settings

Access settings via the phone's menu button or web interface. Front Panel: Line keys, Navigation cluster, Softkeys, Speakerphone, Mute, Volume controls.

Menu Navigation: Use the navigation cluster to scroll through options; press Select to confirm.

Basic Settings: Language, Time/Date, Ringtone selection, Display brightness. Network Settings: IP configuration (DHCP/Static), VLAN settings, Proxy configuration. Audio Settings: Handset volume, Speaker volume, Ringer volume, Audio mode (wideband/narrowband).

Connecting Devices

Network: Ethernet cable to switch. Peripheral: Headset to headset port, optional expansion module.

1. Turn off phone before connecting additional devices.
2. Match cables to correct ports (e.g., Ethernet to LAN port).
3. For expansion modules, connect via dedicated port on the side of the phone.

Tip: Use certified Cisco headsets and accessories for optimal compatibility.

Using Phone Features

Supports basic and advanced telephony features.

1. Make a Call: Lift handset or press Speakerphone, dial number, press Dial or wait for auto-dial.
2. Answer a Call: Lift handset, press Speakerphone, or press Answer softkey.
3. Hold/Resume: Press Hold button to place call on hold; press Resume to return.
4. Transfer Call: Press Transfer, dial target number, announce call, press Transfer again.
5. Conference Call: Press Conference, dial first participant, press Conference again, dial second participant.
6. Call Forwarding: Access call forwarding settings via phone menu or web interface.
7. Voicemail: Press Messages button or dial voicemail access number.
8. Directory: Access corporate directory or personal speed dials.

WARNING! Do not disassemble the phone; refer service to qualified personnel.

Accessibility Features

Visual Alerts: Flashing LED for incoming calls. Audio Adjustments: Customizable ringer volume and tones. TTY Support: Compatible with teletypewriter devices.

Care & Cleaning

Unplug from power before cleaning. Use a soft, dry cloth; do not use liquids or abrasive cleaners.

CAUTION! Avoid getting moisture into openings; keep phone dry.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. Copyright © Cisco Systems, Inc. All rights reserved. For technical support, visit www.cisco.com/support or contact your network administrator.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Phone not powering on	Power source/connection	Check PoE switch or power adapter; ensure cable is securely connected.
No dial tone	Network/registration	Verify network connectivity; check registration status on CUCM.
Poor audio quality	Network/audio settings	Check network for packet loss; verify audio codec settings.
Display is blank	Power/backlight	Check power; adjust display brightness in settings.
Cannot make/receive calls	Configuration/line status	Verify line configuration on CUCM; check for call restrictions.

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

Service: Contact Cisco Technical Support or your network administrator.