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- 通信DTMF communication DTMF
- 短波地空通信多普勒频移对DTMF信号解码影响 Effect to DTMF decoding of Doppler shift in ground-air HF communication
- 采用DTMF方式通信的安全报警系统 Safety Alert System By DTMF Communication mode
- DTMF Dual Tone Multi - Frequency
- 你亲自或通信申请均可。 You may apply in person or by letter.
- DTMF信号 DTMF signal
- DTMF解码 DTMF decode
- 两个姑娘现在定期互相通信。 Both girls write to each other regularly now.
- DTMF信令 DTMF signaling
- 你一直和他通信吗? Have you been corresponding with him?
- 地下铁道通信 communication in the subway
- DTMF信号检测 DTMF signal detection
- 频分多路通信 frequency division multiplex communication
- 双音多频（DTMF） DTMF(Dual Tone Multiple Frequency)
- 铁路长途通信 railway toll communication
- DTMF（双音多频） Dual- Tone Multifrequency
- 流星余迹通信设备 meteoric trail communication equipment
- 双音多频（DTMF）传输 double tone multifrequency(DTMF)
- 军鸽通信 military pigeon communication
- DTMF信号的产生和检测。 Generation and detection of the DTMF signals.
