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中频转接有很多优点,中频转接要号简单方便。如A、B、C、D四台机器,B、C机转接,A机呼叫D机或D机呼叫A机,音频转接需要两个号,中频转接只需要一个号。中频转接故障少,A、D机间的通话信号只经过B、C机高中频部分,不经过B、C机的音频部分和自动盘,特别是自动盘故障多,B、C机音频部分和自动盘的故障不会影响A、D机间
There are many advantages of IF conversion, IF conversion number is simple and convenient. Such as A, B, C, D four machines, B, C machine transfer, A machine called D machine or D machine called A machine, audio transfer requires two numbers, IF conversion requires only one number. Intermediate frequency switching failure less, A, D between the machine only through the B, C machine high-IF part of the signal, without the audio part of the B and C machines and automatic disk, especially the automatic disk failure, B, C machine audio part And automatic disk failure will not affect the A, D machine room