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What is the HR-PR-TN button on my phone?

What is the HF-PR-TN button on my phone? 

The HF-PR-TN button on your DX80 or DX120 phone is a button that controls the talk path on intercom calls. It stands for HANDS-FREE PRIVATE TONE, and the button toggles between the three options.

When your phone is in HANDS-FREE mode – the button will be Green. When you are in Hands-free mode someone can intercom you and you can respond and communicate over the speakerphone.

When you phone is in PRIVATE mode – the button will be Red. While in Private mode someone can intercom you and you can hear the caller, but you are muted, and the caller cannot hear your response unless you press the speaker button or pick up the handset.

When your phone is in TONE mode – the button will not be lit. While in Tone mode someone who intercoms you will hear your phone ring and must wait for you to answer it before they can speak or hear you.

Forward Telecommunication Services, Telephone Equipment & Systems Dealers, Joliet, IL
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