Systems at the core are increasingly more elaborate and complex and are being developed to handle even more data. The requirements at the edge are entirely different; simplicity, multiservice, integration, and cost rule. Typically, only a few wavelengths are required to start. Space is often a premium, especially in huts and street cabinets. In some cases, the equipment needs to be environmentally and temperature hardened.

ADTRAN's Optical Networking Edge (ONE) delivers an innovative right-sized Packet Optical Solution integrated with access and transport. It is optimized for tier 2/3 service provider markets. It supports a variety of applications including mobile backhaul, business ethernet, residential broadband, and data centers. ONE delivers low initial cost, smaller footprint, and lower power as compared to core systems designed for high initial capacity and very long site distances.