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Dell B4220T - User Manual

Dell B4220T
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Dell Pro Wireless Headset
WL5022
User's Guide
Regulatory Model: B4220T / BT600
September 2022
Rev. A02

Table of Contents

Questions and Answers

  • L
    Lauren LeeAug 7, 2025
    What to do if my Dell B4220T Headsets call control isn't working on softphone?
    • M
      Megan JamesAug 7, 2025
      If your headset call control isn't working as expected during a softphone call, try these steps: 1. Ensure your headset firmware is up-to-date for the best performance. 2. Make sure only one softphone application is open at a time. 3. Enable headset control (answer/end and mute) functionality using the Dell Peripheral Manager app, if necessary. 4. Verify that the softphone you're using is supported by the Dell WL5022.
  • P
    Patricia VillaAug 23, 2025
    What to do if the Dell B4220T talk time is not accurate?
    • A
      Andrew WeberAug 23, 2025
      To reset the accuracy of the talk time prompts, fully deplete your Dell Headsets battery and then fully charge it.

Dell B4220T Specifications

General IconGeneral
Connectivity TechnologyWired
Sound Output ModeStereo
MicrophoneYes
Impedance32 Ohm
Frequency Response20 - 20000 Hz

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