What does USSN stand for?
USSN stands for "Unstructured Supplementary Services Notification"
How to abbreviate "Unstructured Supplementary Services Notification"?
"Unstructured Supplementary Services Notification" can be abbreviated as USSN
What is the meaning of USSN abbreviation?
The meaning of USSN abbreviation is "Unstructured Supplementary Services Notification"
What does USSN mean?
USSN as abbreviation means "Unstructured Supplementary Services Notification"
