Cisco Phone Model CP 8841 Manual

The Cisco CP 8841 is a high-performance, full-featured IP phone designed for business environments, offering high-definition voice quality, a large color display, support for multiple lines and calls, Power over Ethernet (PoE), built-in Gigabit Ethernet switch, 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. Advanced Call Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Large color LCD display, Handset with HD audio, Speakerphone, Navigation cluster, Softkeys, Volume rocker, Headset port, Ethernet ports, Power connector.

Feature	Description
Display	5-inch color LCD with backlight
Audio	High-Definition wideband audio
Speakerphone	Full-duplex speakerphone
Network	Dual Gigabit Ethernet ports (10/100/1000)
Power	IEEE 802.3af PoE or external power adapter
Headset Port	3.5mm headset jack for wired headsets
Lines/ Calls	Supports up to 8 lines and multiple concurrent calls
Codecs	G.711, G.722, G.729, iLBC
Security	802.1X authentication, TLS, SRTP
Protocols	SIP, SCCP (Skinny)

Installation

Unpack and inspect contents. Place on stable surface.

Connect to Network: Use Ethernet cable to connect the PC port to your computer and the Network port to the switch/router.
Power the Phone: Use PoE from switch or connect the external power adapter to the power port.
Connect Handset: Plug the handset cable into the handset port.
Optional Headset: Plug a headset into the headset jack.

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

First-Time Setup

Power on phone; follow on-screen prompts.

Network Boot: Phone will attempt to obtain IP address via DHCP.
Register with Call Manager: Phone will download configuration from Cisco Unified Communications Manager (CUCM).
Set Language: Press Settings button, select User Preferences > Language.
Configure Time/Date: Settings > Device Configuration > Time & Date.
Test Audio: Make a test call to verify handset and speakerphone.

CAUTION! Do not disconnect power during firmware upgrade.

Specifications

Dimensions: 8.3 x 10.9 x 6.1 inches (W x H x D).
Weight: 3.3 lbs (1.5 kg).
Display: 5-inch TFT color, 480 x 272 pixels.
Network Interfaces: 2 x 10/100/1000 Ethernet (RJ-45).
Power: IEEE 802.3af PoE (Class 3) or 48 VDC external adapter.
Audio Codecs: G.711 (a-law, μ-law), G.722, G.729a, G.729ab, iLBC.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Humidity: 10% to 95% non-condensing.
Compliance: FCC Part 15, CE, RoHS.

Controls and Settings

Access menu via Settings button. Front Panel: LCD screen, Softkeys, Navigation cluster (Up/Down/Left/Right, Select), Volume rocker, Mute button, Headset button, Speakerphone button.

Buttons: Line keys, Softkeys, Hold, Transfer, Conference, Messages, Directory, Settings, Applications, Help.

Settings: User Preferences (Language, Ringtone, Screen Brightness). Device Configuration (Network, Security, Time). Call Features: Call Forward, Do Not Disturb, Speed Dials. Audio Settings: Handset/Headset/Speaker volume, ringtone volume.

Connecting Devices

Network: Ethernet cable to switch. Computer: Connect to PC port. Headset: 3.5mm jack.

Turn off devices before connecting.
Connect Network cable from wall/switch to Network port.
Connect Computer to PC port (optional).
Plug headset into headset jack if used.

Tip: Use Cat5e or better Ethernet cables for Gigabit performance.

Advanced Call Features

Supports multiple call features via CUCM.

Make Call: Lift handset or press Speakerphone, dial number.
Answer Call: Lift handset, press Speakerphone, or press Answer softkey.
Hold: Press Hold button to place call on hold.
Transfer: During call, press Transfer, dial target, press Transfer again.
Conference: During call, press Conference, dial participant, press Conference again to merge.
Call Forward: Press CFwdAll softkey, enter destination number.
Do Not Disturb: Press DND softkey to silence calls.
Speed Dials: Program via Directory > Personal Directory.
Voicemail: Press Messages button to access voicemail.

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

Accessibility Features

Visual Alert: Flashing LED for incoming calls. Audio Adjustments: Independent volume controls for handset, headset, ringer, speaker. High-Contrast Display: Adjust screen contrast in Settings. Hearing Aid Compatible: Handset is HAC rated.

Care & Cleaning

Unplug power before cleaning. Use soft, dry cloth for display and body. For stubborn marks, dampen cloth with water only; do not use solvents.

CAUTION! Do not spray liquids directly on phone. Avoid abrasive cleaners.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business use. CE Mark: Conforms to European EMC directive. RoHS: Compliant with Restriction of Hazardous Substances. Copyright © Cisco Systems, Inc. For support, visit www.cisco.com or contact Cisco Technical Assistance Center (TAC).

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source	Check PoE switch or power adapter connection; try different outlet.
No network	Cables/DHCP	Verify Ethernet cables; check switch port; ensure DHCP is enabled.
No dial tone	Registration	Check phone registration status on CUCM; reboot phone.
Poor audio quality	Network/Codec	Check network for packet loss; verify codec configuration on CUCM.
Display issues	Settings	Adjust brightness/contrast in Settings; restart phone.

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

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