Abbreviations beginning with p

PSTNPublic Switched Telephone Network
Computing » Networking

PSTNPublic Switched Telephony Network
Computing » Telecom

PSTNPostal Satellite Training Network
Governmental

PSTNPublic Switched Telephone Network
Governmental » Military

PSTNPublic Switched Telephone Network
Internet

PSTNPlain Standard Telephone Network
Miscellaneous » Unclassified

PSTNProfessional Security Training Network
Miscellaneous » Unclassified

PSTNPublic Switch Telephone Network
Miscellaneous » Unclassified

PSTNPublic Switched Telephone Networks
Miscellaneous » Unclassified

PSTNPublic Switched Telephony Network
Miscellaneous » Unclassified

PSTNPublic Switches Telephone Network
Miscellaneous » Unclassified

PSTNPublic Switching Telephone Network
Miscellaneous » Unclassified

PSTNSS7Public Switched Telecommunication/Telephone Network Signaling System 7
Miscellaneous

PSTOPotentials Spatial-Temporal Organization
Academic & Science

PSTOPusat Studi Tumbuhan Obat (Indonesian: Center for Drug Plants)
Academic & Science

PSTOPrincipal Sea Transport Officer (various locations)
Governmental

PSTOProbationary and Substitute Teachers Organization
Miscellaneous

PSTOPsicologia Social do Trabalho e das
Miscellaneous » Unclassified

PSTOCPublic Safety and Transportation Operations Center (Fairfax County, VA)
Governmental