使用uCOS-II操作系统的短信息电话机 使用uCOS-II操作系统的短信息电话机

DTMF制式主叫号码显示规范，本规程适用于能够接收和显示交换机以 DTMF 方式传送的主叫号码的电话机或附加装 置-Caller ID display DTMF standard specification, the rules apply to telephone or additional devices can receive and display switches to DTMF mode of transmission of Caller ID

自动电话机技术条件-GBT15279-2002,是自动电话机的标准，也是制定其他模拟式电话机的标准-Automatic telephone-GBT15279-2002, is automatic telephone standards, but also to develop other standard analog telephone