“Is it compatible with AT&T CL 2940, also to be able to answer calls from headset, do i need a lifter?”

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• Hi! If the AT&T phone belongs to the 2900 series then it should work with the CS520. In order to be able to answer calls from the headset you would need a handset lifter (HL10). If you require further assistance, feel free to contact our Customer Care Team at: 1-855-765-7878.

  Answered by PlantronicsRepresentative 5 years ago

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