What does PROOF stand for?
PROOF stands for "Primary Rate ISDN OSI Office Facilities"
How to abbreviate "Primary Rate ISDN OSI Office Facilities"?
"Primary Rate ISDN OSI Office Facilities" can be abbreviated as PROOF
What is the meaning of PROOF abbreviation?
The meaning of PROOF abbreviation is "Primary Rate ISDN OSI Office Facilities"
What does PROOF mean?
PROOF as abbreviation means "Primary Rate ISDN OSI Office Facilities"
