VFFT Voice – Frequency Facility Terminal

voice-frequency facility terminal(VFFT)

voice-frequency facility terminal

section c-c c-c

AM voice frequency carrier telegraph systme

double Voice frequency signal

FMVFT Frequency Modulated Voice Frequency Telegraph

FSVFT Frequency Shift Voice Frequency Telegraph

Non-Voice Terminal

secure voice terminal

VAD Voice C Activated Dialing

VCC Voice C Controlled Carrier

VDR Voice C Digitization Rate

VEV Voice C Excited Vocoder

VF Voice Frequency

VFA Voice Frequency Amplifier

VFB Voice Frequency Generator

VFC Voice Frequency Cable

VFC Voice Frequency Carrier