ETSI TR 103 000-1-2003 接入和终端(AT).公共电话网的模拟接入.协调终端接口的标准的建议注释.第1部分:全部建议注释列表(版本1.1.2)
Access and Terminals (AT); Analogue Access to Public Telephone Network; Advisory Notes to Standards Harmonizing Terminal Interface; Part 1: List of All Advisory Notes (V1.1.2)