Installation Guide
Tools Needed:
- Ethernet cable (Cat5e or higher)
- Power adapter (if not using PoE)
- Screwdriver (for wall mount)
- Network switch with PoE support
- Computer for configuration
Step-by-Step Installation
- Unpack and Inspect: Remove all packaging materials and verify all components are present.
- Connect to Network: Connect the Ethernet cable from the network switch to the phone's LAN port.
- Power Connection: Connect the power adapter if not using Power over Ethernet (PoE).
- Handset and Accessories: Connect the handset cord and any additional accessories like headsets.
- Power On: Press the power button and wait for the phone to boot up completely.
- Network Configuration: Configure network settings either manually or via DHCP.
- Test Functionality: Make a test call to verify audio quality and all features are working properly.
Specifications
| Model Series | CP-8841 / CP-8851 / CP-8861 |
| Type | IP Conference Phone |
| Color | Black / White |
| Display | 5-inch color LCD touchscreen |
| Audio Quality | HD Voice, Wideband Audio |
| Network Protocols | SIP, SCCP, HTTP, HTTPS, TFTP |
| Power Options | PoE (802.3af), AC Power Adapter |
| Ethernet Ports | 2 x 10/100/1000 Mbps (LAN + PC) |
| Audio Codecs | G.711, G.722, G.729, iLBC, Opus |
| Dimensions (HxWxD) | 20 x 25 x 15 cm |
| Weight | 2.5 kg |
| Operating Temperature | 0°C to 40°C |
Warranty Information
- Standard Warranty: 1 year parts and labor
- Extended Warranty: Available up to 5 years
- Software Support: 3 years of firmware updates
For warranty service, contact Cisco Technical Support at 1-800-553-2447 or visit Cisco.com/support
Key Features
HD Voice Quality
Advanced audio technology delivers crystal-clear voice quality with wideband audio support for natural-sounding conversations.
Full-Duplex Speakerphone
Echo cancellation and noise reduction technology allows for clear conference calls with multiple participants.
Touch Screen Interface
Intuitive 5-inch color touchscreen provides easy access to contacts, call history, and advanced features.
Bluetooth Connectivity
Built-in Bluetooth allows wireless connection to mobile devices and Bluetooth headsets for flexible communication.
Power over Ethernet
Simplified installation with single cable for both network connectivity and power delivery.
Security Features
Enterprise-grade security with encrypted signaling, secure boot, and certificate management.
Conference Features Explained
Omni-directional Microphones
360-degree audio pickup for clear voice capture from all directions in conference rooms
Acoustic Fence Technology
Focuses on voices within the conference area while reducing background noise
Intelligent Audio
Automatically adjusts audio levels for consistent volume across all participants
Multi-party Conferencing
Supports up to 8 simultaneous participants in a conference call
One-touch Recording
Easy recording of conference calls for later reference or transcription
Wireless Content Sharing
Share presentations and documents wirelessly during conference calls
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Phone won't power on | Power issue, faulty PoE switch, bad power adapter | Check power source, test with AC adapter, verify PoE switch functionality |
| No network connectivity | Network cable issue, wrong configuration, switch port problem | Check Ethernet cable, verify network settings, test switch port |
| Poor audio quality | Network congestion, codec mismatch, hardware issue | Check network QoS settings, verify codec configuration, test with headset |
| Cannot make/receive calls | Registration failure, SIP configuration error, firewall blocking | Check registration status, verify SIP settings, review firewall rules |
| Display issues | Loose connection, firmware problem, hardware failure | Check display cable, update firmware, contact support if persistent |
| Bluetooth not working | Bluetooth disabled, pairing issue, interference | Enable Bluetooth, re-pair device, check for interference sources |
Error Codes
- CM-1-0: Network cable unplugged - Check Ethernet connection
- CM-2-1: DHCP failure - Check DHCP server availability
- CM-3-2: TFTP server not found - Verify TFTP server configuration
- CM-4-3: Registration failed - Check SIP credentials and server
- CM-5-4: DNS resolution failed - Verify DNS server settings
- CM-6-5: Certificate error - Check security certificates
Manual Downloads
Current Model Manuals
CP-8841
Conference Phone Basic
CP-8851
Conference Phone Advanced
CP-8861
Conference Phone Premium
CP-8832
3-Line Conference Phone
Popular Previous Models
CP-7937G
Conference Phone G Series
CP-7936
Conference Phone Standard
CP-7931
Basic Conference Phone
CP-8811
3-Line Business Phone