题型:问答题 简答题 【GSM协议与标准】挂机之后A接口资源清除的顺序为(拆线-DISC,清除BSS资源-CLEAR,释放-REL):()A、DISC-REL-CLEARB、REL-DISC-CLEARC、CLEAR-REL-DISCD、CLEAR-DISC-REL 查看答案