The European Commission has published an open call for proposals for a study entitled "The identification of essential network infrastructure reference points, including operation and management access points and their state of standardization" This study is particularly concerned with developments in private telecommunications networks (PTNs), also known as corporate telecommunications networks (CPNs). The objective of the study is to provide information on the degree of standardization of the various network reference points, including public network interfaces, inter-corporate network interfaces and operation and management access points. The Commission is interested in the ways in which standardization and regulation can properly support the needs of this market while protecting legitimate concerns relating to security and privacy. The terms of reference for the study may be requested from: European Commission Directorate-General for Telecommunications, Information Market and Exploitation of Research DG XIII/A Mr P. Picard 200 rue de la Loi (BU 9 5/176) B-1049 Brussels Tel. +32-2-2968342; Fax +32-2-2968393 Proposals should be sent to the same address.