Cisco SM-X-16FXS/2FXO

The Cisco SM-X-16FXS/2FXO is a network module designed for Cisco Integrated Services Routers (ISR) 4000 Series. It provides 16 analog FXS (Foreign Exchange Station) ports and 2 analog FXO (Foreign Exchange Office) ports. FXS ports are used to connect analog devices such as telephones, fax machines, or modems to a VoIP (Voice over IP) network. These ports provide the necessary voltage and signaling to power and control the analog devices. 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 to traditional telephone lines. The Cisco SM-X-16FXS/2FXO module enables businesses to integrate their analog devices and PSTN connectivity into their IP-based networks, allowing for unified communications and advanced telephony features.