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