What does OAS stand for?
OAS stands for "Originating AT&T Switch"
How to abbreviate "Originating AT&T Switch"?
"Originating AT&T Switch" can be abbreviated as OAS
What is the meaning of OAS abbreviation?
The meaning of OAS abbreviation is "Originating AT&T Switch"
What does OAS mean?
OAS as abbreviation means "Originating AT&T Switch"
