connected tone-controlled squelch system

Continuous Tone Controlled Squelch System(CTCSS) is a technology which transmit sub-audio fequency siginal with audio frequency siginal to squelch or multi-use the same fequency channel and it is widely usede in various wireless communication facility.

连续语音控制静噪系统(CTCSS)是一种将亚音频附加在音频信号中一起传输用来静噪和同频道复用的技术,在各种无线通信设备中有着广泛的运用。