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