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