1. Introduction
This user manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of the Cisco IP Phone 8811. Designed for business-class collaboration, this VoIP phone delivers high-fidelity, reliable, secure, and scalable voice communications. Please read this manual thoroughly to ensure proper use and to maximize the functionality of your device.
2. Product Overview
The Cisco IP Phone 8811 is a cost-effective, business-class collaboration endpoint. It features an attractive ergonomic design and wideband audio for clear voice communications. The device supports SIP, RTCP, RTP, SRTP, and SDP protocols, offering encrypted voice communications for enhanced security. It integrates with Cisco communication servers to provide a comprehensive suite of unified communications features.
Image of the Cisco IP Phone 8811, a charcoal-colored VoIP phone with a display screen, keypad, and various function buttons. The phone features a handset on the left, a large display on the right, and a central navigation cluster.
3. Setup
3.1 Package Contents
Before beginning, ensure all components are present:
- Cisco IP Phone 8811 unit
- Handset and coiled cord
- Ethernet cable (for network connection)
- Optional: Power adapter (if Power over Ethernet (PoE) is not used)
- Documentation (this manual)
3.2 Connecting the Phone
- Connect the Handset: Plug one end of the coiled cord into the handset and the other end into the handset port on the phone base.
- Connect to Network (PoE): If using Power over Ethernet, connect an Ethernet cable from your network switch or router to the "SW" (Switch) port on the back of the phone. The phone will power on automatically.
- Connect to Network (External Power): If PoE is not available, connect an Ethernet cable from your network switch or router to the "SW" port. Then, connect the optional power adapter to the phone's power port and plug it into a power outlet.
- Connect to PC (Optional): If you wish to connect a computer through the phone, connect an Ethernet cable from your computer to the "PC" port on the back of the phone.
- Initial Boot-up: Allow the phone to power on and connect to the network. This process may take a few minutes as the phone obtains an IP address and registers with your call control system.
3.3 Mounting Options
The Cisco IP Phone 8811 is designed for desktop use with its integrated stand. It is also wall-mountable using an optional wall-mount kit (sold separately).
4. Operating Instructions
4.1 Basic Call Functions
- Making a Call: Lift the handset, press the Speaker button, or press a line button. Dial the number and press the Dial softkey or wait for automatic dialing.
- Answering a Call: Lift the handset, press the Speaker button, or press the Answer softkey.
- Ending a Call: Replace the handset, press the Speaker button again, or press the End Call softkey.
- Placing a Call on Hold: During an active call, press the Hold softkey. To resume, press the Resume softkey or the flashing line button.
- Transferring a Call: During an active call, press the Transfer softkey. Dial the transfer recipient's number, and once connected, press Transfer again to complete.
4.2 Speakerphone and Headset
Press the Speaker button to activate or deactivate the speakerphone. The phone also supports a headset connection via the dedicated headset port.
4.3 Conference Calls
The Cisco IP Phone 8811 supports 3-way conference calls. During an active call, press the Conference softkey, dial the number of the third party, and once connected, press Conference again to join all parties.
4.4 Voicemail
Press the Messages button to access your voicemail system. Follow the voice prompts to retrieve messages.
4.5 Adjusting Volume
Use the Volume button (rocker switch) to adjust the volume of the handset, speakerphone, or ringer.
5. Maintenance
5.1 Cleaning the Phone
To clean the phone, use a soft, lint-free cloth. If necessary, slightly dampen the cloth with water. Avoid using abrasive cleaners, solvents, or aerosol sprays, as these can damage the phone's surface and internal components.
5.2 Environmental Considerations
Keep the phone away from direct sunlight, heat sources, and excessive moisture. Ensure proper ventilation around the device to prevent overheating.
6. Troubleshooting
6.1 Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Phone does not power on. | No power from Ethernet (PoE) or power adapter. | Verify Ethernet cable is securely connected to a PoE-enabled port, or ensure power adapter is correctly plugged in. |
| No dial tone. | Phone not registered with call control system; network issue. | Check network cable connection. Allow time for registration. If issue persists, contact your IT administrator. |
| Cannot hear caller / Caller cannot hear me. | Volume too low; faulty handset/headset; network quality issue. | Adjust volume. Test with speakerphone. Check handset/headset connection. |
| Display is blank or frozen. | Software issue; power interruption. | Unplug the Ethernet cable (and power adapter if used) for 10 seconds, then reconnect to restart the phone. |
For issues not listed here or if solutions do not resolve the problem, please contact your system administrator or technical support.
7. Specifications
| Brand | OEM |
| Model Number | CP-8811-K9= |
| Color | Charcoal |
| Item Weight | 1 Pounds (approx. 0.45 kg) |
| Package Dimensions | 13.31 x 10.67 x 2.91 inches (approx. 33.8 x 27.1 x 7.4 cm) |
| Telephone Type | Corded VoIP Phone |
| Power Source | Corded Electric (PoE or optional power adapter) |
| Dialer Type | Integrated VoIP Dialer |
| Answering System Type | Digital |
| Compatible Devices | Devices supporting SIP, PoE, and Gigabit Ethernet |
| Recording Capacity | 18 minutes (for voicemail, if supported by system) |
| Conference Call Capability | 3-way |
8. Warranty and Support
Warranty information for the Cisco IP Phone 8811 (Model CP-8811-K9=) is typically provided by the original manufacturer, OEM, or the reseller from whom the product was purchased. Please refer to the documentation included with your purchase or contact your vendor for specific warranty terms and conditions.
For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact your IT department or the authorized reseller/manufacturer support channels.
