What does DDT stand for?
DDT stands for "Delayed Dialing Tone"
How to abbreviate "Delayed Dialing Tone"?
"Delayed Dialing Tone" can be abbreviated as DDT
What is the meaning of DDT abbreviation?
The meaning of DDT abbreviation is "Delayed Dialing Tone"
What does DDT mean?
DDT as abbreviation means "Delayed Dialing Tone"
