语音频带 meaning in Chinese

speech band

Essential requirements for terminal equipment intended for connection to 4 - wire analogue speechband leased lines of the public telecommunications network
公共电信网络4条模拟语音频带租赁线连接终端设备的基本要求
Essential requirements for terminal equipment intended for connection to 2 - wire analogue speechband leased lines of the public telecommunications network
公共通信网络双线模拟语音频带租赁线连接终端设备的基本要求