SM-X-8FXS/12FXO= Cisco 12 x Ports FXO RJ-21 + 8 x Ports FXS RJ-21 High-Density Analog Voice Service Module for 4000 Series Integrated Service Router

Elevate your voice communications with the Cisco SM‑X‑8FXS/12FXO high‑density analog voice service module, designed for the 4000 Series Integrated Service Router. This versatile module seamlessly integrates 12 FXO and 8 FXS RJ‑21 ports, enabling efficient management of both inbound and outbound PSTN connections while maximizing your network’s capacity. Its compact, rack‑mountable form factor delivers reliable, high‑quality voice service without compromising on space or performance. Ideal for enterprise environments that demand scalable, cost‑effective telephony solutions, this module provides the robust, flexible infrastructure needed to support growing voice traffic and future‑proof your communications strategy.