Description
The Cisco NIM-4FXO is a network interface module designed to enhance voice connectivity in Cisco ISR routers by providing four Foreign Exchange Office (FXO) ports. These ports enable seamless integration with analog telephone lines, allowing businesses to connect legacy phone systems to modern IP networks. Built for reliability, this module ensures high-quality voice transmission and supports features such as caller ID, call forwarding, and conferencing. Its compact design allows for easy installation in compatible Cisco ISR 4000 Series routers, making it a cost-effective solution for expanding telephony capabilities.
Equipped with four RJ-11 connectors, the NIM-4FXO supports PSTN connectivity with loop-start and ground-start signaling. It operates within a frequency range of 300 Hz to 3400 Hz and offers impedance matching for optimal voice clarity. The module is hot-swappable, reducing downtime and simplifying maintenance in enterprise environments. With a robust build and Cisco’s advanced voice processing technology, this FXO module is an ideal choice for businesses looking to integrate analog voice services into their existing network infrastructure.

