The SM-X-8FXS/12FXO is a Cisco High-Density Analog Voice and Fax Service Module. It provides a combination of 8 FXS ports and 12 FXO ports, enabling the integration of traditional analog telephony equipment with Cisco 4000 Series Integrated Services Routers (ISRs). This module facilitates connections to both analog phones and the Public Switched Telephone Network (PSTN), offering a solution for businesses needing to bridge legacy phone systems with modern IP-based networks.
