What does TSF stand for?
TSF stands for "Tandem Switching Feature"
How to abbreviate "Tandem Switching Feature"?
"Tandem Switching Feature" can be abbreviated as TSF
What is the meaning of TSF abbreviation?
The meaning of TSF abbreviation is "Tandem Switching Feature"
What does TSF mean?
TSF as abbreviation means "Tandem Switching Feature"
