What does PIN stand for?

PIN stands for "T.30 procedural interupt negative"

How to abbreviate "T.30 procedural interupt negative"?

"T.30 procedural interupt negative" can be abbreviated as PIN

What is the meaning of PIN abbreviation?

The meaning of PIN abbreviation is "T.30 procedural interupt negative"

What does PIN mean?

PIN as abbreviation means "T.30 procedural interupt negative"