2-wire analogue voice band interfaces; Terminal Equipment transmitting voice signals; Test simulation for level limitation requirements
2线模拟声带接口；传输语音信号的终端设备；电平限制要求的测试模拟

1998-05-01

Essential requirements for connection of terminal equipment to 2-wire analogue interfaces, without capacitive termination, of public switched telecommunication networks using either the earth calling, the loop calling-disconnect clearing, the loop calling-guarded clearing or the loop calling-unguarded clearing signalling method
使用接地呼叫、环路呼叫断开清除、环路呼叫保护清除或环路呼叫非保护清除的公共交换电信网络的终端设备与2线模拟接口（无电容终端）连接的基本要求

1996-09-15