Third issue of the ONP list of standards
This third issue of the Open Network Provision (ONP) list of standards follows previous publications of 8 April 1993 and 29 December 1990. These previous publications were purely indicative lists, since standards published under the ONP Directive have to fulfil certain conditions and, at the time, no standards were available which fulfilled all the required conditions. Appropriate standards are now available or will shortly become available in some areas, and therefore certain chapters (I and IV) of the present list constitute a formal reference while others remain indicative ((II, III and V).