Key Features
The Cisco NIM-4FXO Network Module delivers four high-performance FXO ports to support analog voice, PSTN connections, and legacy telephony integration. It enhances communication reliability by ensuring clear, uninterrupted call routing across business networks. Compatible with Cisco 4000 Series ISR routers, this module enables flexible deployment, simplified management, and smooth migration from analog systems to unified communications. Its robust design supports key voice functions such as sign
