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Digium TDM2401E is a modular telephony card that connects analog phone lines to Asterisk-based IP phone systems. This model combines an TDM2400P base card with one X400M FXO module and a VPMOCT032 echo-cancellation module. The card is a cost-effective and scalable solution for reducing infrastructure like gateways, while integrating analog phones with your VoIP system.
Digium TDM2400P is a base card with room for six FXO/FXS modules in total, so you can add further FXO or FXS port modules to customize the card to fit your phone system. It is a full-length 32-bit 33 MHz card that works in any PCI 2.2+ slot. Digium X400M is a quad FXO module that provides four trunk line interfaces to connect to the PSTN. Digium VPMOCT032 is a hardware echo-cancelling module that is G.168 compliant.
Digium TDM2401E comes with a 5-year manufacturer warranty.