They also own the communications gear that directs traffic over the Internet. There are only a handful of major backbone providers, including MCI, WorldCom, Sprint Corp. (FON), GTE, and PSINet Inc. (PSIX).

• 他们还拥有指挥因特网信息传递的通信控制装置。大的主干网提供商并不太多，包括MCI、WorldCom、Sprint Corp.；(FON)、GTE和PSI Net inc