What does ISOS stand for?
ISOS stands for "Intercall Switch Operating System"
How to abbreviate "Intercall Switch Operating System"?
"Intercall Switch Operating System" can be abbreviated as ISOS
What is the meaning of ISOS abbreviation?
The meaning of ISOS abbreviation is "Intercall Switch Operating System"
What does ISOS mean?
ISOS as abbreviation means "Intercall Switch Operating System"
