What does CPTU stand for?
CPTU stands for "Call Progress Tone Unit"
How to abbreviate "Call Progress Tone Unit"?
"Call Progress Tone Unit" can be abbreviated as CPTU
What is the meaning of CPTU abbreviation?
The meaning of CPTU abbreviation is "Call Progress Tone Unit"
What does CPTU mean?
CPTU as abbreviation means "Call Progress Tone Unit"
