This section describes 4-port FXS/DID interface cards and how to connect them to a network. Cisco voice interface cards (VICs) support voice technologies. VICs can be installed in interface card slots on supported Cisco access routers or in 1- or 2-slot voice network modules that are installed in network module slots on supported Cisco access routers. A Foreign Exchange Station (FXS)/Direct Inward Dialing (DID) interface connects directly to a standard telephone, fax machine, or similar device. This interface supplies ringing voltage, dial tone, and so on to the station.
This Cisco voice interface card (VIC3-4FXS/DID) is supported on the following Cisco routers: •￼Cisco 2800 series routers, including the Cisco 2801, Cisco 2811, Cisco 2821, and Cisco 2851 •￼Cisco 3800 series routers, including the Cisco 3825 and Cisco 3845 •￼Cisco IAD2430 series routers •￼Cisco UC520-x series routers
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