What does STS stand for?
STS stands for "Supplemental Telephony Service"
How to abbreviate "Supplemental Telephony Service"?
"Supplemental Telephony Service" can be abbreviated as STS
What is the meaning of STS abbreviation?
The meaning of STS abbreviation is "Supplemental Telephony Service"
What does STS mean?
STS as abbreviation means "Supplemental Telephony Service"
