PSTN "PSTN" means Public Switched Telephone Network which is an applications service involving a public circuit switched voice grade interface for the delivery of voice and data communications; PU(A) 419/2002 - COMMUNICATIONS AND MULTIMEDIA (UNIVERSAL SERVICE PROVISION) REGULATIONS 2002 2. Interpretation.
PSTN "PSTN" means Public Switched Telephone Network which is an applications service involving a public circuit switched voice grade interface for the delivery of voice and data communications; PU(A) 79/2002 - COMMUNICATIONS AND MULTIMEDIA (RATES) RULES 2002 2. Interpretation.