Cisco NIM-2FXS/4FXO

The Cisco NIM-2FXS/4FXO is a network interface module (NIM) designed for use with Cisco Integrated Services Routers (ISRs). It provides two Foreign Exchange Station (FXS) ports and four Foreign Exchange Office (FXO) ports. The FXS ports are used to connect analog devices such as telephones, fax machines, or modems to the router. These ports provide the necessary voltage and signaling to support these devices. The FXO ports, on the other hand, are used to connect the router to the PSTN (Public Switched Telephone Network). These ports allow the router to receive and make calls over traditional telephone lines. Overall, the Cisco NIM-2FXS/4FXO module enables voice and data integration in a single platform, allowing businesses to leverage their existing analog devices while taking advantage of the benefits of IP-based communications.