What does CSDN stand for?
CSDN stands for "Commercial Switched Digital Network"
How to abbreviate "Commercial Switched Digital Network"?
"Commercial Switched Digital Network" can be abbreviated as CSDN
What is the meaning of CSDN abbreviation?
The meaning of CSDN abbreviation is "Commercial Switched Digital Network"
What does CSDN mean?
CSDN as abbreviation means "Commercial Switched Digital Network"
