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Understanding Connections

Updated by Hayden Everly on Feb 7, 2024

Understanding Connections

Desk Phone Ports

  • RJ9: Handset jacks, some headset jacks, busy buddy
  • RJ11: Wall jacks on all home phones, the CT10, the SPO2-H the Chattaway and all Polycom phones
  • RJ45: the big connector that most digital phones and all computer networking cables and devices use.The size of the TEL ports in the back of Sennheiser and Plantronics wireless.
  • 2.5mm: Some corded desk phones have a 2.5mm headset jack

Cordless Phone Port

  • RJ11 that connect the base of the phone to the wall
  • 2.5mm is the size of the headset port on the cordless phone handset

Cell phones:

  • 3.5mm: Most touch screen phones have
  • 2.5mm: Older phones with button you push
  • Lightning port: The jack for iPhone 7 and higher

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This is the internal support database for Headsets.com. We manufacture and sell office headsets in North America. With over 25 years' experience in the business, we know headsets.

Please use our support database for free headset support, whether you’re a Customer of ours (or not). If you have problems, suggestions, or unanswered questions, please email us at hello@headsets.com (compliments also welcomed 😀)

Looking for office headsets in the UK? Check out Headsets.co.uk.

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What is Headset Answers?

This is the internal support database for Headsets.com. We manufacture and sell office headsets in North America. With over 25 years' experience in the business, we know headsets.

Please use our support database for free headset support, whether you’re a Customer of ours (or not). If you have problems, suggestions, or unanswered questions, please email us at hello@headsets.com (compliments also welcomed 😀)

Looking for office headsets in the UK? Check out Headsets.co.uk.

Questions/comments?