国际电话电报咨询委员会
- 网络CCITT;Consultative Committee on International Telephone and Telegraph
国际电话电报咨询委员会-
国际电话电报咨询委员会（CCITT）（现ITU-T）于1988年接受了SONET概念并重新命名为SDH，使其成为不仅适用于光纤也适用于微波和卫星传输的通用技术体制。
Advisory Committee on International Telephone and Telegraph ( CCITT ) ( now ITU-T ) in 1988 to accept the concept of the SONET and SDH renamed . Applies not only to make it also applicable to fiber-optic microwave and satellite transmission system of the Common Technical .