r/techsupport Aug 13 '22

RJ45 jack in home, unsure if data or phone Open | Networking

  • Home built in 2002
  • Jack label reads T568A, CX

How do I know if this jack is phone or data?

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u/OriginalGordol Aug 13 '22

RJ11 is typically phone only, RJ45 is typically ethernet but will also take an RJ11 plug.