Digium S400M Digium Quad FXS Module S400M

The Digium S400M FXS (Foreign Exchange Station) module allows the TDM2400P card to terminate four analog telephones per module. Because of the modular design, a user can activate additional ports at any time with more S400M daughter cards. The S400M module passes all the call features any standard analog telephone line will support. Worldwide certifications are pending.

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