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Dual 2FXS Plus - Expansion module - 2 ports
The TSU Multiplexer FXS+ option modules provides four 2-wire interfaces that can operate in the PLAR, Tandem (MEGACOM), or FXS mode. The available modules provide 2- and 4-port voice interfaces that supply line current to station equipment. The original FXS+ modules support message waiting and higher ringing voltages.
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