You don't want to spend a single cent on a complex map but ask someone to do it for free (http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Main=42559&Number=349171#Post349171), but now several thousand € is not too much for you?
Don't get me wrong, if you gave us a free port that would be fine but I have reasonable doubt.

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