1. Product Overview
The Plantronics Analog Switch is designed to provide seamless call management for users with Quick Disconnect (QD) headsets, allowing them to switch between a desk phone and a computer (PC) with ease. This device enhances productivity by simplifying the connection process and offering intuitive controls for audio source selection and microphone muting.

This image displays the Plantronics Analog Switch, a compact black device designed to manage audio connections. On its top surface, there are two distinct buttons for selecting between a telephone and a computer, indicated by corresponding icons. A red illuminated strip highlights the mute button, positioned centrally. The front panel features ports for connecting a Quick Disconnect (QD) headset and an RJ9 cable for a desk phone, along with a micro USB port for PC connection.
2. Package Contents
Verify that all items are present in the package:
- Plantronics Analog Switch for Quick Disconnect (QD) Headsets
- 10-foot Coil Cable
- RJ9 Cable
- USB to micro USB Cable
3. Setup and Installation
Follow these steps to connect your Plantronics Analog Switch:
3.1. Connecting to a Desk Phone
- Locate the headset port on your desk phone. This is typically an RJ9 port.
- Connect one end of the provided RJ9 Cable to the headset port on your desk phone.
- Connect the other end of the RJ9 Cable to the designated phone port on the Plantronics Analog Switch.
3.2. Connecting to a PC
- Locate an available USB port on your computer.
- Connect the micro USB end of the USB to micro USB Cable to the corresponding port on the Plantronics Analog Switch.
- Connect the standard USB end of the cable to a USB port on your computer.
3.3. Connecting a QD Headset
- Take your Plantronics Quick Disconnect (QD) headset.
- Connect the QD end of your headset cable to the QD port on the Plantronics Analog Switch. Ensure a secure connection.
3.4. Adjusting Compatibility Switch (A-F)
On the underside of the Plantronics Analog Switch, there is a small switch with settings labeled A through F. This switch adjusts the audio compatibility for different phone systems. If you experience no audio or poor audio quality after initial setup, adjust this switch:
- With your headset connected and a call active (or attempting to make one), gently flip the A-F switch to each position.
- Listen for clear incoming audio and ask the person on the other end if they can hear you clearly.
- Select the setting that provides the best audio quality for both incoming and outgoing sound.
4. Operating Instructions
Once the Plantronics Analog Switch is set up, operating it is straightforward:
4.1. Device Selection
The top surface of the switch features two distinct buttons, one for the phone and one for the computer. Press the desired button to select the audio source for your headset. The active source will typically be indicated visually.
4.2. Mute Function
A dedicated mute button is located on the top of the switch. Press this button to mute your microphone during a call. A visual indicator (e.g., a red light or strip) will confirm that the microphone is muted. Press the button again to unmute.
4.3. Quick Disconnect (QD) Feature
The Quick Disconnect (QD) feature allows you to easily detach your headset from the switch without disconnecting the switch from your phone or PC. This is useful for taking breaks or moving away from your desk while keeping your connections intact.
5. Maintenance
To ensure the longevity and optimal performance of your Plantronics Analog Switch, follow these maintenance guidelines:
- Cleaning: Use a soft, dry, lint-free cloth to clean the exterior of the device. Avoid using liquid cleaners, aerosols, or solvents.
- Storage: Store the switch in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the device with care. Avoid dropping it or exposing it to excessive force.
6. Troubleshooting
If you encounter issues with your Plantronics Analog Switch, refer to the following common problems and solutions:
- No Audio or Poor Audio Quality:
- Ensure all cables (RJ9, USB, QD headset) are securely connected to their respective ports on the switch, desk phone, and PC.
- Verify that the correct device (phone or PC) is selected on the switch.
- Adjust the A-F compatibility switch on the underside of the device. Cycle through each setting (A, B, C, D, E, F) while on a call to find the optimal audio quality.
- For PC connections, check your computer's sound settings to ensure the Plantronics device is selected as the default input and output audio device.
- Mute Button Not Functioning:
- Confirm that the switch is properly connected and receiving power (if applicable, via USB for indicators).
- Check if the visual mute indicator (red strip) responds when the button is pressed.
- Device Not Recognized by PC:
- Ensure the USB to micro USB cable is firmly connected to both the switch and the PC.
- Try connecting the USB cable to a different USB port on your computer.
- Restart your computer.
- Check your computer's Device Manager for any unrecognized devices or driver issues.
7. Specifications
| Model Number | 205255-01 |
| Brand | Plantronics |
| Connectivity Technology | Wired (RJ9, USB, Quick Disconnect) |
| Compatible Devices | PCs, Desk Phones, Plantronics QD Headsets |
| Control Type | Call Control (Device Selection, Mute) |
| Included Components | Analog Switch, 10-foot Coil Cable, RJ9 Cable, USB to micro USB Cable |
| Product Dimensions | 6 x 2 x 7 inches |
| Item Weight | 11.2 ounces (0.7 lbs) |
| Color | Black |
| Material | Plastic |
| Special Features | Lightweight, Retractable (coil cable) |
8. Warranty Information
For detailed warranty information regarding your Plantronics Analog Switch, please refer to the official Plantronics (now Poly) website or the warranty card included with your product. Warranty terms and conditions may vary by region and purchase date.
9. Support
If you require further assistance or have questions not covered in this manual, please visit the official Plantronics (now Poly) support website or contact their customer service department. You can typically find contact information and additional resources on their website.

