Transmission and Multiplexing (TM); Optical interfaces for equipments and systems relating to the Synchronous Digital Hierarchy [ITU-T Recommendation G.957 (1993), modified]
传输和多路复用(TM);与同步数字体系有关的设备和系统的光学接口[ITU-T建议G.957(1993) 修改]
发布日期:
1993-06-01
欧洲以外的国家标准组织正在对SDH光接口进行研究。在该领域开展ETSI活动也是可取的。
Studies of SDH optical interfaces are in progress in national standards organizations outside Europe. An ETSI activity in this field is also advisable.