Việt
tín hiệu âm tần
Anh
audiofrequency signal
VF signal
voice frequency signal
voiceband signal
Đức
Tonfrequenzsignal
Pháp
signal audiofréquence
signal téléphonique
Tonfrequenzsignal /IT-TECH/
[DE] Tonfrequenzsignal
[EN] VF signal; voice frequency signal; voiceband signal
[FR] signal audiofréquence; signal téléphonique
Tonfrequenzsignal /nt/Đ_TỬ, VT&RĐ/
[EN] audiofrequency signal
[VI] tín hiệu âm tần