特高频通信机与传真机的连接朱文军当特高频通信机作为传输手段进行传真通信时，需要在用户二线端子上接入传真机。但如果将传真机直接接入用户二线端使用，往往会造成传输失败，因为传真机的被叫用户标识（ＣＥＰ）信号的频率为２．１ｋＨｚ，而特高频的传输控制信号在出... UHF communication machine and fax machine connection Zhu Wenjun When UHF communication machine as a means of transmission for fax communication, you need to access the fax machine on the second-line terminal. However, if the facsimile machine is directly connected to the second line of the user, the transmission will often fail, because the frequency of the CEP signal of the fax machine is 2.1 kHz, while the transmission control signal of the extra high frequency is out. .