POTS RJ11 Gigabit Media Converters for Fiber Telephony

Extend the PCM Voice Telephone and network signal: 2/4 independent telephone lines + 1 Gigabit Ethernet port (100/1000 Mbps) through the same fiber optic cable to the far end. It is suitable for both types of fiber (singlemode and multimode). Long-range singlemode fiber up to 20 km (12 miles), multimode fiber up to 500 m (0.31 miles)
Support for Called ID, Ring, and Fax functions, delay-free transmission, and protocol support: Unlike VoIP products, these converters transmit signals directly over fiber-optic cables, which ensures NO DELAYS, as well as support for fax machines and legacy applications that are not supported by VoIP lines.