What does PTSS stand for?
PTSS stands for "Public Telephone Switching System"
How to abbreviate "Public Telephone Switching System"?
"Public Telephone Switching System" can be abbreviated as PTSS
What is the meaning of PTSS abbreviation?
The meaning of PTSS abbreviation is "Public Telephone Switching System"
What does PTSS mean?
PTSS as abbreviation means "Public Telephone Switching System"
