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