The gsm - r system supports functions of function number address , location decide address , vbs and vgcs . because of these functions , the gsm - r system can support the normal voice communication and specific communicaton for railway application 通過gsm - r系統(tǒng)的功能尋址、基于位置尋址、組呼叫、廣播呼叫等功能,可以提供鐵路運輸指揮話音通信業(yè)務,也可提供站場、應急、施工養(yǎng)護和道口等專用通信。