What does OSIS stand for?
OSIS stands for "Operator Service Information System"
How to abbreviate "Operator Service Information System"?
"Operator Service Information System" can be abbreviated as OSIS
What is the meaning of OSIS abbreviation?
The meaning of OSIS abbreviation is "Operator Service Information System"
What does OSIS mean?
OSIS as abbreviation means "Operator Service Information System"
