标准号:ANSI C12.21-2006
中文标准名称:电话调制解调器通信的协议规范
英文标准名称:Protocol Specification for Telephone Modem Communication
标准类型:L63
发布日期:2006/11/29 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:L63
国际标准分类号:35.180
适用范围:The standard details the criteria required for communications between an electric power metering device and a utility host via a modem connected to the switched telephone network. The utility host could be a laptop computer, a master station system, an e