What does USIS stand for?
USIS stands for "User-to-User Information message"
How to abbreviate "User-to-User Information message"?
"User-to-User Information message" can be abbreviated as USIS
What is the meaning of USIS abbreviation?
The meaning of USIS abbreviation is "User-to-User Information message"
What does USIS mean?
USIS as abbreviation means "User-to-User Information message"
