What does SIR stand for?
SIR stands for "Session Initiation Request"
How to abbreviate "Session Initiation Request"?
"Session Initiation Request" can be abbreviated as SIR
What is the meaning of SIR abbreviation?
The meaning of SIR abbreviation is "Session Initiation Request"
What does SIR mean?
SIR as abbreviation means "Session Initiation Request"
