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The X400M FXO module allows 800 Series or 2400 Series analog cards to terminate a quad analog line per module.
Because of the modular design, you can activate additional ports at any time with more S400M or X400M daughter cards. The X400M module passes all the call features any standard analog telephone line will support.
FXO is an interface that connects to a trunk line, like the one from your service provider. It receives ringing voltage and battery from FXS devices. FXO interfaces are used to connect your PBX to the PSTN. One FXO channel is required for each line your receive from your telco.
5 years subject to correct use as per the technical and user manual.
Back to warehouse following submission of RMA on support page as per the procedures and documentation.
All RMA's need to be returned in original packaging.