What does IST/TT stand for?
IST/TT stands for "Integrated Services Trunk and Other Tie Trunk"
How to abbreviate "Integrated Services Trunk and Other Tie Trunk"?
"Integrated Services Trunk and Other Tie Trunk" can be abbreviated as IST/TT
What is the meaning of IST/TT abbreviation?
The meaning of IST/TT abbreviation is "Integrated Services Trunk and Other Tie Trunk"
What does IST/TT mean?
IST/TT as abbreviation means "Integrated Services Trunk and Other Tie Trunk"
