DIN EN 50377-5-1:2003
光纖通信系統中使用的連接器組和互連元件.產品規范.第5-1部分:端接在IEC 60793-2類B.1.1單模纖維上的EC型
Connector sets and interconnect components to be used in optical fibre communication systems - Product specification - Part 5-1: Type EC terminated on IEC 60793-2, category B1.1 singlemode fibre; German version EN 50377-5-1:2003