What does NDUB stand for?
NDUB stands for "Network Determined User Busy"
How to abbreviate "Network Determined User Busy"?
"Network Determined User Busy" can be abbreviated as NDUB
What is the meaning of NDUB abbreviation?
The meaning of NDUB abbreviation is "Network Determined User Busy"
What does NDUB mean?
NDUB as abbreviation means "Network Determined User Busy"
