精选优质文档-倾情为你奉上1、网元的概念及其作用GSM系统模型1. 1专业术语解释GSMGOBLE SYSTEM FOR MOBILE COMMUNICATION全球移动通信系统SSSWITCHING SYSTEM交换系统BSSBASE STATION SYSTEM 基站系统BSCBASE STATION CONTROLLER基站控制器OMCOPERATION AND MAINTENANCE CENTER 操作维护中心OSSOPERATION AND SUPPORT SYSTEM 操作支持系统ISDNINTEGRATED SERVICE DIGITAL NETWORK 综合业务数字网PLMNPUBLIC LAND MOBILE network共用陆地移动网HPLMNHOME PUBLIC LAND MOBILE network国内共用陆地移动网PSTNPUBLIC SWITCHing telecommunicate network 共用电话交换网PSDNP
