What does OIS stand for?
OIS stands for "Operational Intercommunications System"
How to abbreviate "Operational Intercommunications System"?
"Operational Intercommunications System" can be abbreviated as OIS
What is the meaning of OIS abbreviation?
The meaning of OIS abbreviation is "Operational Intercommunications System"
What does OIS mean?
OIS as abbreviation means "Operational Intercommunications System"
