What does ISDN stand for?
ISDN stands for "Ist Sowas Denn Nötig"
How to abbreviate "Ist Sowas Denn Nötig"?
"Ist Sowas Denn Nötig" can be abbreviated as ISDN
What is the meaning of ISDN abbreviation?
The meaning of ISDN abbreviation is "Ist Sowas Denn Nötig"
What does ISDN mean?
ISDN as abbreviation means "Ist Sowas Denn Nötig"
