(< circuit-switched data,
"kommuteeritavad andmed")

olemus
kunagine andmesidetehnoloogia:
kuni 2010 kasutati TDMA-võrkudes ja
mobiilsidesüsteemis GSM,
edastuskiirus tüüpiliselt kuni 9,6 kbit/s
=
an intermediary upgrade technology for GSM

ülevaateid
https://en.wikipedia.org/wiki/Circuit_Switched_Data

http://etutorials.org/Mobile+devices/mobile+vpn/Part+II+MVPN+and+Advanced+Wireless+Data+Services/Chapter+6+GSM+GPRS+and+UMTS+VPN+Solutions/GSM+and+UMTS+Circuit-Switched+Data+Solutions/

http://ftp1.digi.com/support/documentation/AN_024_Digi_Making_and_receiving_CSD_data_calls_v1.0.pdf