Does the term hybrid coil refer to a private switching system that has characteristics of both a KTS and a PBX?

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Quizplus · Accepted Answer

A hybrid coil, also known as a hybrid transformer or telephone hybrid, is an electrical device used in telephony to convert between 2-wire and 4-wire forms of communication. It does not refer to a switching system with characteristics of both a Key Telephone System (KTS) and a Private Branch Exchange (PBX).

Does the Term Hybrid Coil Refer to a Private Switching