What does ISTN stand for?
ISTN stands for "Integrated Switching and Transmission Network"
How to abbreviate "Integrated Switching and Transmission Network"?
"Integrated Switching and Transmission Network" can be abbreviated as ISTN
What is the meaning of ISTN abbreviation?
The meaning of ISTN abbreviation is "Integrated Switching and Transmission Network"
What does ISTN mean?
ISTN as abbreviation means "Integrated Switching and Transmission Network"
