Safety of household and similar electrical appliances. Particular requirements for oral hygiene appliances connected to the mains supply, through a safety isolating transformer and test methods
Information technology. International standardized. Profiles TB, TC, TD and TE. Connection-mode transport service over connection-mode network service. Part 9. Subnetwork-type dependent requirements for network layer, data link layer and physical layer concerning permanent access to a paket switched data network using virtual calls
