https://en.wikipedia.org/wiki/List_of_information_technology_initialisms

• ITC: International Terrestrial cable.
• IPLC: International Private Leased Circuit.
• IGW: International gateway.
• TIG: International Internet Gateway.
• LS: Landing Station.
• POP: Point of Presence..
• UG: Underground.
• ANS: Access Network Service.
• BPO: Business Process Outsourcing
• MNC: Multi National Companies.
• SDH: Synchronous Digital Hierarchy.
• DWDM: Dense wavelength division multiplexing.
• POTP: Packet Optical Transport.
• NOC: Network Operation Center.
• TX: Transmission.