Helical Springs Made of Round Wire; Quality Specifications for Cold Coiled Tension Springs
Edition 1973-05

Television systems - Specification of the D2-MAC/packet system; English version ETS 300250:1993
Edition 1994-08

Integrated Services Digital Network (ISDN); attachment requirements for terminal equipment to connect to an ISDN using ISDN basic access; layer 3 aspects; english version ETS 300104:1991
Edition 1992-05

Television systems - Specification of the D-MAC/packet system; English version ETS 300355:1994
Edition 1994-10

Integrated Services Digital Network (ISDN); support of packet-mode terminal equipment by an ISDN; english version ETS 300007:1991
Edition 1992-11