[en] Over the past 25 years, Romania has been actively participating in the activities supporting the implementation of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) verification regime. Today, its technical activities consist in operating the Romanian National Data Centre (ROM_NDC), the seismological station Cheia-Muntele Rosu as auxiliary seismic station in the International Monitoring System (IMS), as well as submitting supplementary data to the Prototype International Data Centre (PIDC). ROM_NDC bulletins are obtained using the data recorded at 17 seismic stations in the Romanian national network. They are submitted to the PIDC as supplementary data, based initially on automatic location for local seismic events, and regularly updated with analyst revised solutions. The present paper contains a comparison between ROM_NDC locations for seismic events on the Romanian territory (and its immediate neighbourhood) and the PIDC revised event bulletins, for the period 1995-1999. A detailed analysis of epicenter and depth estimations in the two bulletins for the common set of events is performed, and the possible causes of the observed differences are discussed. This paper offers a description of activities in Romania in the field of global seismological monitoring in support of the CTBT, emphasizing results on the detection and location capability of the CTBT IMS network for seismic events in the Carpathians region of Central Europe. (authors)