Mobile station, equipment for connection to mobile station, switching systems in mobile communications systems and mobile communications systems.
移动通信系统中的移动站，连接到移动站的设备，交换系统，以及移动通信系统。
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A person trained in this field may need to know how to set up and maintain telephone equipment, voicemail systems, fiber optic and microwave communication links, as well as mobile radio equipment.