A voice - grade transmission facility with defined frequency response, gain and bandwidth.

信道是指一种话音级传输设备,定义了频率响应 、 增益和带宽.

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All'of this can be done over a voice grade communication channel.

所有这些都可通过话音级的通信通道来实施.

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ISDN is used on digital lines as well as on voice - grade lines.

整合服务数位网路在数位线路上被使用就如同在声音等级的线路上.

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Improving the signal quality of a voice grade data line to improve the speed or accuracy.

改善声音信道数据线的信号质量以提高速度或精度.

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Interface between carriers and customer installations - Analog voice grade switched access lines using loop - start and ground - start signaling.

电信公司和客户安装之间的接口,使用环路起始和地起始信令的 模拟话音 级交换访问线路.

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