国际电信联盟组织ITU-T第十五研究组(光和其他传送网)于2006年10月30日至11月10日在瑞士日内瓦召开了(2005 -2008年)研究期第四次全体会议。现将会议主要情况和研究进展扼要介绍如下: 1.会议概况司、72个科学或工业组织的代表及专家等共276人。我国参加会议的代表共39本次会议讨论审议的文件共609份, International Telecommunication Union ITU-T Study Group 15 (Optical and Other Transport Networks) convened the fourth plenary session of the study period (2005-2008) in Geneva, Switzerland, from 30 October to 10 November 2006. The main situation and research progress of the conference are briefly described as follows: 1. A total of 276 people, including representatives from the general meeting of the conference and representatives and experts from 72 scientific and industrial organizations. A total of 609 documents were reviewed and discussed at the meeting in our country,