Digital Lightwave Inc. 10GE-OTN-N OTU-1e and OTU-2e Test Option 10G Ethernet testing with OTU-2 encapsulation. Supports the use of fixed stuff columns with FEC (Forward Error Correction) specifically for OC-192/STM-64 clients, resulting in a line rate of 11.095 Gbps (OTU-2e) and witho