Changes made by 1999/304/EC: Commission Decision of 12 April 1999 on a common technical regulation for integrated services digital network (ISDN); telephony 3,1 kHz teleservice, attachment requirements for handset terminals (edition 2) (notified under document number C(1999) 875)
EU Decision 1999/304
The legislation 1999/304/EC: Commission Decision of 12 April 1999 on a common technical regulation for integrated services digital network (ISDN); telephony 3,1 kHz teleservice, attachment requirements for handset terminals (edition 2) (notified under document number C(1999) 875) changes, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.