Create second local station

Good morning.
For testing purpose I would like to add a second local station to Mendelson.
The production is a standard station bind to port 5085.
I thought that simply cloning production and using a different "as2 id" our partner will be redirected on the test station, but even if they use the test as2 id the message is received on the Mendelson production station, and the answer they receive is sent by production station.
It's also necessary to change the bind port? And in this case the only way to do is modify the jetty.xml?
Thanks

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AS2