AT COMMAND SET AT Commands (* Serial interface operation only) A/ Re-execute command.命令重执行 AT= x - Write to Selected S-Register 写S寄存器 AT? - Read Selected S-Register 读S寄存器 A Go off-hook and attempt to answer a call.摘机应答 Bn - CCITT or Bell B0 Select V.22 connection at 1200 bps.选择1200BPS V.22 B1 Select Bell 212A connection at 1200 bps. 选择1200BPS BELL212 Cn - Carrier Control 载波控制
