A key component of Nortel’s  Carrier Ethernet Solution , the Metro Ethernet Services Unit 1800 is a high-performance, cost effective platform built for the edge of provider networks as the delivery point for Ethernet-based services. It may be deployed in either a ring-based or a point-to-point topologies in the metro access network.

When combined with the Nortel's Metro Ethernet Services Module 8668 for the  Metro Ethernet Routing Switch 8600 , Nortel's Metro Ethernet Services Unit 1800 provides 50 millisecond restoration time with the highest levels of scalability as well as the ability to map individual customer VLANs to separate customer VPNs.

• Physical demarcation and secure customer separation on a shared uplink
• Multiple services (e.g. Internet access, VoIP, etc.) per physical interface for maximum revenue generation
• Cost-optimized customer located equipment (CLE) device suitable for proactive access network build outs or fitting into existing network infrastructures
• Ethernet access ring resiliency, for sub 50 ms resiliency and highly efficient bandwidth aggregation in a switched Ethernet ring topology
• Multiple classes of services for prioritization and traffic management required to offer and meet strict SLAs