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