Digium X400M Quad FXO Module X400M

The Digium X400M Quad FXO Module X400M FXO (Foreign Exchange Office) module allows the TDM2400P card to terminate four analog telephone lines (POTS) per module. Because of the modular design, a user 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. Worldwide certifications are pending.