Condition: New
Digium TDM404ESupported Protocols: SIP, IAX, H.323Ports: 4 FXOInterface: PCIIncludes Echo CancellationTDM404E Product DescriptionThe Digium TDM404E includes a four FXO interface modules and the VPMADT032 hardware echo cancellation module bundled with the TDM410 base card. The TDM404E bundle can be used with the Asterisk PBX software to deploy a powerful VoIP solution for business and personal use.What are FXO and FXS Ports?FXO: Analog telephone line connection - 1 call per port FXS: Analog telephone or fax machine connection - 1 device per port
TDM410 Base Card DescriptionUsing an industry-standard bursting, bus-mastering interface chip that is found within millions of PC systems worldwide, and Digium VoiceBus technology, the TDM410 eliminates the requirement for external gateways, with industry-leading performance and price. The trunk and station modules are interchangeable, allowing the creation of any combination of interfaces. The optional hardware echo cancellation module provides 1024 taps (128 milliseconds) of echo cancellation for superior voice quality on both trunk and station interfaces. Scaling of this solution is accomplished by adding additional TDM410 or other Digium analog interface cards.The naming convention for the TDM bundles is as follows: TDM X Y B/E. Where "TDM" denotes that the card is in the TDM series, "X" denotes the number of FXS modules and "Y" denotes the number of FXO modules. If the model number includes a "B" indicates that that this product is a bundle and if it includes an "E" it indicates that it is a bundle with echo cancellation.
