Modem 常用AT指令集(21) CELLULAR COMMANDSCellular Commands^C2 - Download Cellular Phone Driver ......下载外接电话驱动^I - Identify Cellular Phone Driver........确定外接电话驱动^T6 - Indicate Status of Cellular Phone..... 外接电话状态FAX CLASS 1 COMMANDS+FCLASS=n Service class. 选择工作方式+F<command>? - Report Active Configuration+F<command>=? - Report Operating Capabilities+FAE=n Data/fax auto answer数据/传真自动应答+FRH=n Receive data with HDLC framing.+FRM=n Receive data. 接收数据+FRS=n Receive silence. 接收静默+FTH=n Transmit data with HDLC framing.+FTM=n Transmit data. 发送数据