What does DTFS stand for?
DTFS stands for "Dial Tone Feature Set"
How to abbreviate "Dial Tone Feature Set"?
"Dial Tone Feature Set" can be abbreviated as DTFS
What is the meaning of DTFS abbreviation?
The meaning of DTFS abbreviation is "Dial Tone Feature Set"
What does DTFS mean?
DTFS as abbreviation means "Dial Tone Feature Set"
