... fixed-line copper cable phone service. See PSTN and PTO. PPP Public-Private Partnership - A partnership between ... system; however, may also refer to mobile networks. PTO Public Telecom Operator - Usually the circuit switched ...
... fixed line copper cable phone service. See PSTN. and PTO. Private Peering See Peer/peering. ... networks. Public Telecom Operator PTO Usually the circuit switched fixed line telecom operator, ...