What does ISUP stand for?
ISUP stands for "International Standards Telecommunications Union"
How to abbreviate "International Standards Telecommunications Union"?
"International Standards Telecommunications Union" can be abbreviated as ISUP
What is the meaning of ISUP abbreviation?
The meaning of ISUP abbreviation is "International Standards Telecommunications Union"
What does ISUP mean?
ISUP as abbreviation means "International Standards Telecommunications Union"