What does ISUP stand for?
ISUP stands for "ISDN User Part"
How to abbreviate "ISDN User Part"?
"ISDN User Part" can be abbreviated as ISUP
What is the meaning of ISUP abbreviation?
The meaning of ISUP abbreviation is "ISDN User Part"
What does ISUP mean?
ISUP as abbreviation means "ISDN User Part"
