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This is our AT&T Merlin 410, a small key telephone system from the early 1980’s. This system can support 4 incoming lines and 10 telephone sets, referred to as voice terminals. It also features expansion slots for adding additional functionality and supports both pulse and tone dialing. The Merlin family of systems continued to evolve and expand, and was finally discontinued in 2006. This system came from a small local bank branch and needed significant cleaning and restoration, as seen below.
