Cisco NIM-4FXO

The Cisco NIM-4FXO is a network interface module (NIM) designed for use with Cisco Integrated Services Routers (ISRs). It provides four analog Foreign Exchange Office (FXO) ports, which allow connection to traditional analog telephony devices such as analog phones, fax machines, and analog PBX systems. The NIM-4FXO module enables voice and data integration, allowing businesses to leverage their existing analog infrastructure while migrating to IP-based telephony systems.