Partyline (PL)

Partyline (PL)

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the name PL (partyline) came from the original telephone systems where everyone shared the same line and could hear all conversations at once. It is often called 2-wire or TW. A partyline system allows a group of people to intercommunicate. A partyline is typically used when several users, such as beltpacks or camera intercoms, are engaged in a specific common activity and they need to talk and/or listen to each other all the time.

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