What does ISG stand for?
ISG stands for "ISDN Signaling Group"
How to abbreviate "ISDN Signaling Group"?
"ISDN Signaling Group" can be abbreviated as ISG
What is the meaning of ISG abbreviation?
The meaning of ISG abbreviation is "ISDN Signaling Group"
What does ISG mean?
ISG as abbreviation means "ISDN Signaling Group"
