[Koha] KOHA data export through Z39.50

[tigran at flib.sci.am]

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