The Fiber Driver Ethernet Universal Service Module (EUSM™) is the ultimate converter-based Optical Ethernet Demarcation device for bookend pair applications only. Flexible and cost-effective architecture reduces both operating and capital expenses (OpEx and CapEx) while providing premium services including full service level control over link connectivity and WAN/LAN segment provisioning. Native support for jumbo packet sizes up to 9600 bytes supports demanding Ethernet services such as distributed video and network storage arrays.

Located at the edge of the customer premises, the EUSM CO/CPE pair provides carrier-to-customer network interface that separates the upstream WAN from the downstream network: customer LAN or peer carrier network. The bookend EUSM pair uses extended OAM 802.3ah protocols to fully manage both ends of the point-to-point fiber optic link from a single manager at one end of the link. CO and CPE link ports on the respective EUSMs are controlled similarly from the managed side of the link.