English translation for "大区域电话服务"

wide area telephone service

Similar Words：

"大区通信网" English translation, "大区统" English translation, "大区委员会" English translation, "大区移动业务" English translation, "大区域" English translation, "大区域侦测器" English translation, "大区域镇规划" English translation, "大区制移动通信系统" English translation, "大区中心" English translation, "大区中心局" English translation