1. Overview
The Plantronics CS540 Wireless DECT Headset is designed for office and desk-centric workers who use desk phones. It offers clear communication with a noise-canceling microphone and a versatile convertible design for all-day comfort.

Image: The Plantronics CS540 Wireless DECT Headset resting on its charging base.
2. What's in the Box
The Plantronics CS540 package includes the following components:
- Wireless Headset
- User Manual
- Adapter
- Charging Base
3. Wearing Styles
The CS540 headset offers a convertible design with three wearing options to ensure comfort for extended use:
- Over-the-Ear: A lightweight earloop style.
- Over-the-Head: A traditional headband style.
- Behind-the-Head: Requires a separately sold neckband for this style.

Image: The Plantronics CS540 headset shown in its three convertible wearing styles.
4. Setup
4.1. Connecting to a Desk Phone
- Connect the provided cable from the CS540 base to your desk phone's headset port.
- Ensure the base is powered on and the headset is docked.
- For remote call answering, an optional HL10 lifter (sold separately) can be integrated.

Image: The CS540 charging base connected to a desk phone, illustrating a typical setup.
4.2. Charging the Headset
Place the headset onto the charging base. The indicator light on the base will show the charging status. A full charge provides up to 7 hours of talk time.

Image: The CS540 headset securely placed in its charging base.
4.3. Pairing
The headset is typically pre-paired with its base. If re-pairing is needed, consult the detailed user manual for specific instructions.
5. Operating the Headset
5.1. Call Controls
- Answer/End Call: Use the one-touch control button on the headset.
- Volume Adjustment: Adjust the volume using the dedicated controls on the headset.
- Mute: Mute the microphone using the mute button on the headset.
5.2. Noise-Canceling Microphone
The integrated noise-canceling microphone helps to minimize background noise, ensuring clear speech transmission during calls.
5.3. Roaming Range
Enjoy freedom of movement with a roaming range of up to 120 meters (400 feet) from the charging base, allowing you to multitask during calls.

Image: A close-up of the CS540 headset, emphasizing its wireless capabilities.
6. Maintenance
To ensure the longevity and optimal performance of your Plantronics CS540 headset:
- Keep the headset and charging base clean and free from dust.
- Store the headset in a cool, dry place when not in use.
- Avoid exposing the device to extreme temperatures or moisture.
7. Troubleshooting
If you encounter issues with your CS540 headset, consider the following:
- No Audio: Ensure the headset is charged and properly paired with the base. Check all cable connections to the desk phone.
- Poor Sound Quality: Verify the headset is within range of the base. Check for any obstructions or interference.
- Cannot Answer Calls Remotely: If using an HL10 lifter, ensure it is correctly installed and configured.
- For further assistance, refer to the complete user manual or contact Plantronics support.
8. Specifications
| Brand | POLY |
| Model Name | Poly CS540 - Convertible Wireless Headset |
| Connectivity Technology | Wireless (DECT) |
| Wireless Communication Technology | DECT |
| Noise Control | Sound Isolation, Noise Canceling Microphone |
| Wearing Style | Over-the-ear, Over-the-head, One-Ear (Convertible) |
| Talk Time | Up to 7 hours |
| Roaming Range | Up to 120 m / 400 ft |
| Compatible Devices | Desk phones |
| Control Type | Call Control, Volume Control, Touch Control |
| Item Weight | 1.15 pounds |
| Product Dimensions | 6.5 x 1.25 x 6.48 inches |
9. Product Video
Watch this short video for an overview of the Plantronics CS540 Wireless Headset System.
Video: A brief product video showcasing the Plantronics CS540 Wireless Headset System.
10. Warranty & Support
For any issues with the headset or cord, please reach out to Plantronics directly for support and warranty claims.





