They should not be relied upon to provide an error free method of relaying tone signalling to other decoders, such as a telephone exchange DTMF detector, for example.
它不应该被依赖用做提供一种无错的传送方法，传送双音频信号到另一解码器。例如：电话交换机的DTMF侦察器。
The CQP7000 supported a wide range of tone signalling standards, channel scanning and user programmable memory features, enhanced by the eight character alphanumeric display.
该CQP 7000支持标准的信号音广泛，频道扫描和用户可编程存储器的功能，由8个字符的字母数字显示增强。
The CQP7000 supported a wide range of tone signalling standards, channel scanning and user programmable memory features, enhanced by the eight character alphanumeric display.
该CQP 7000支持标准的信号音广泛，频道扫描和用户可编程存储器的功能，由8个字符的字母数字显示增强。
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