[Koha] KOHA data export through Z39.50

dear List trying to export Koha data through Marcedit Z39.50 client. as a database name writing kohadata, and as a a port number 9999 But can't retrieve the records. The system is returning: 'Connection could currently unavailable. Connection couldn't be made to opac.flib.sci.am:9999' although the server is up and running. port number 7090 also is not working. Am I putting incorrect database name and/or port number? thanks Tigran