Attachments to the Public Switched Telephone Network (PSTN); General technical requirements for equipment connected to an analogue subscriber interface in the PSTN
公共交换电话网(PSTN)的附件;PSTN中连接到模拟用户接口的设备的一般技术要求
发布日期:
1998-10-01
连接到模拟PSTN接口的设备的一般技术要求
General technical requirements for equipment connected to analogue PSTN interface