SMDS - (Switched Multi-megabit Data Service) - Switched Multi-megabit Data Service is a standard for very high-speed data transfer. https://en.wikipedia.org/wiki/SMDS

Always-on - (Switched-on TV, Always-switched-on-TV)

Circuit Switched Data (CSD)

Digital Packet Television DITV, Packet TV


High-Speed Circuit-Switched Data (HSCSD)

Landline Telephone

Linear TV


Nonlinear Networks - (non-linear)


Packet-Switched Network


PSTN - (Public Switched Telephone Network)

Statistical Multiplexing, Time Division Multiplexed (TDM)

Switched Broadcast - (a.k.a. Switched Digital Video)





See the Interactive Television Institute.