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1. Glossary

   ... - A traditional fixed-line copper cable phone service. See PSTN and PTO. PPP  Public-Private Partnership - A ... exchange traffic using the Internet Protocol (IP). PSTN  Public Switched Telephone Network - The traditional circuit ...

2. Glossary of Terms

   ... A traditional fixed line copper cable phone service. See PSTN. and PTO. Private Peering   See ... Public Switched Telephone Network PSTN The traditional circuit switched voice telephone system, but ...