1. Introduction
1.1 Product Overview
The Unify OpenScape CP205 SIP Desk Phone is designed to provide reliable and high-quality communication for various professional environments. It offers a balance of essential features and superior audio performance, making it suitable for users requiring Unified Communications (UC) and Computer Telephony Integration (CTI) support.
1.2 Key Features
- Designed for minimal distraction in a professional setting.
- Offers numerous interoperability options with OpenScape CP desk phones.
- Compact and efficient design with a package weight of 1.1 kg.
- Dimensions: 10.2 L x 25.2 H x 23.2 W (Zm).
2. Package Contents
Please verify that all items are present in the package:
- Unify OpenScape CP205 SIP Desk Phone Base Unit
- Handset
- Handset Cord
- Ethernet Cable
- Power Adapter (if not Power over Ethernet - PoE)
- Quick Start Guide
3. Setup
3.1 Physical Connection
To set up your OpenScape CP205 phone, follow these steps:
- Connect the handset cord to the handset and the designated port on the phone base unit.
- Connect one end of the Ethernet cable to the LAN port on the phone and the other end to your network switch or router.
- If not using Power over Ethernet (PoE), connect the power adapter to the phone's power input and then to a power outlet.

Figure 3.1: Rear view of the phone, illustrating the ports for handset, Ethernet, and power connections. The integrated stand is also visible.
3.2 Initial Power On
Once all connections are secure, the phone will power on automatically. The display will show a boot sequence, and then it will attempt to register with your SIP server. This process may take a few moments.
4. Operating the Phone
4.1 Basic Call Functions
- Making a Call: Lift the handset or press the speakerphone button, then dial the number and press the 'OK' or dial button.
- Answering a Call: Lift the handset or press the speakerphone button when the phone rings.
- Ending a Call: Replace the handset or press the speakerphone button again.
- Volume Adjustment: Use the volume buttons (usually '+' and '-') located below the keypad during a call.
4.2 Keypad and Navigation

Figure 4.1: Front view of the phone, highlighting the alphanumeric keypad, navigation cluster, and dedicated function keys for common actions.
The phone features a standard alphanumeric keypad for dialing and text input. A central navigation cluster with 'OK' and arrow keys allows you to navigate through menus and options displayed on the screen. Dedicated function buttons provide quick access to features such as mute, speakerphone, headset, and message waiting indicator.
4.3 Advanced Features
The OpenScape CP205 supports various advanced features, including call forwarding, call waiting, conferencing, and integration with Unified Communications (UC) and Computer Telephony Integration (CTI) systems. Refer to your organization's specific UC/CTI documentation or IT support for detailed instructions on configuring and using these features.
5. Maintenance
To ensure the longevity and optimal performance of your Unify OpenScape CP205 phone, follow these maintenance guidelines:
- Cleaning: Use a soft, dry, lint-free cloth to clean the phone's surface. For stubborn marks, slightly dampen the cloth with water. Avoid using abrasive cleaners, solvents, or aerosol sprays, as these can damage the phone's finish and internal components.
- Environment: Keep the phone in a dry environment, away from direct sunlight, excessive heat, and moisture. Do not expose the phone to liquids.
- Handling: Handle the phone and its components with care. Avoid dropping the phone or subjecting it to strong impacts.
6. Troubleshooting
This section provides solutions to common issues you might encounter with your OpenScape CP205 phone.
| Problem | Solution |
|---|---|
| No dial tone | Check all cable connections (Ethernet, handset, power). Ensure the phone is powered on. Verify network connectivity. |
| Cannot make/receive calls | Ensure the phone is registered with the SIP server (check display for registration status). Verify network settings. Contact your IT administrator. |
| Display is blank or frozen | Unplug the power adapter (or Ethernet cable if PoE) for 10 seconds, then plug it back in to restart the phone. |
| Poor audio quality | Check handset and network cables. Ensure there is no interference from other electronic devices. Verify network bandwidth. |
7. Technical Specifications
Below are the technical specifications for the Unify OpenScape CP205 SIP Desk Phone:
| Feature | Detail |
|---|---|
| Model Number | L30250-F600-C432 |
| Package Dimensions | 9.84 x 8.98 x 4.21 inches |
| Item Weight | 2.2 pounds (1 Kilograms) |
| Color | Schwarz (Black) |
| Material | Plastic |
| Power Source | Corded Electric |
| Dialer Type | Single Keypad |
| Answering System Type | Digital |
| Recording Capacity | 12 minutes |
| Compatible Devices | Computer Systems, VoIP Services, Telephone Networks |
| Date First Available | May 29, 2024 |
8. Warranty and Support
8.1 Product Warranty
The Unify OpenScape CP205 SIP Desk Phone comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging or visit the official Unify website for detailed terms and conditions regarding warranty coverage and duration.
8.2 Technical Support
For technical assistance, troubleshooting beyond this manual, or inquiries about advanced features and system integration, please contact your IT administrator or visit the official Unify support website. Online resources, FAQs, and contact information for customer support are typically available there.





