What does N-ISDN stand for?

N-ISDN stands for "Narrowband ISDN"

How to abbreviate "Narrowband ISDN"?

"Narrowband ISDN" can be abbreviated as N-ISDN

What is the meaning of N-ISDN abbreviation?

The meaning of N-ISDN abbreviation is "Narrowband ISDN"

What does N-ISDN mean?

N-ISDN as abbreviation means "Narrowband ISDN"