Optimux-XLE1 provides a simple, flexible and cost-effective solution for transporting multiple E1, Ethernet, Fast Ethernet and high-speed data channels over an E3 link to distances of up to 110 km (68 miles). The E3 link is available with single mode fiber, multimode fiber, single mode over single fiber, or coax interface. The Optimux-XLE1 multiplexer is available in both modular and nonmodular versions.