Nippon Telegraph and Telephone Corporation (NTT) has introduced the Flexible Access System Architecture (FASA) concept, which aims to provide greater flexibility in optical access equipment through the use of network functions virtualisation (NFV).

Instead of using purpose-built hardware, NTT has modularised the various functions of access equipment as much as possible. This is the first time that the modularisation concept has been applied to access equipment, the Japanese company asserts.