Description
The Cisco NIM-4FXS is a 4-port Network Interface Module designed for the Cisco 4000 Series Integrated Services Routers (ISRs). It provides four Foreign Exchange Station (FXS) ports, enabling direct connection of analog devices such as telephones, fax machines, and modems. Each FXS port delivers up to 100mA of current at 48V DC, with a Ringer Equivalence Number (REN) of 3.5, supporting multiple analog devices per port.
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