| 释义 |
closed user group 封闭式用户群 A specific number of users of a public switched data transmission service who are able to communicate among themselves but who can not have access to other users of the network nor can they be accessed by others of the network. 公用交换数据传输服务中一组特定的用户,他们能相互通信,但不能访问该网络的其它用户,也不能被该网络的其它用户访问。 |