The Optimux-106 multiplexer combines up to four T1 channels and Ethernet link over a fiber optic link. A pair of these units together provides a simple solution for connectivity over distances of up to 74.5 miles. Each of the four T1 signals is transmitted independently, so that each T1 channel can be set to a different clock source.

Optimux-106 Four Channel T1 and Ethernet Multiplexer OP-106/SC/85L