Use TREX Search outside portal

Hi,
Our situation:
1.We have our intranet indexed with Autonomy search engine;
2.We have TREX installed and we have SAP EP7.0
3.We have our intranet also indexed by TREX in our SAP portal (using Web Repository in KM).
Now we would like to replace Autonomy intranet search with TREX. This means that the search field on the intranet page should contact TREX for a search instead of Autonomy.
How can we achieve that?
I have found documents and blogs about TREX API. I know that TREX Java client communicates with TREX server over TCP/IP and that they exchange XML files with the search request and results.
Maybe this would be possible if a TREX java client was available outside portal, but I haven't found it until now.
Kind Regards
Edmond Paulussen

Hi,
This is the URL I get before I click the search button:
http://xxxxxxxxxx/irj/go/km/basicsearch?SearchType=ctrlpers&SelectedSearchIn=FROM_HERE&SelectedSearchFolder=/intranet&SelectedSearchFromHere=/intranet&StartUri=/intranet
This is the URL from the search results:
http://xxxxxxxxxx/irj/go/km/prteventname/HtmlbEvent/prtroot/pcd!3aportal_content!2fevery_user!2fgeneral!2feu_role!2fcom.sap.km.home_ws!2fcom.sap.km.hidden!2fcom.sap.km.urlaccess!2fcom.sap.km.basicsearch?SearchType=ctrlpers&SelectedSearchIn=FROM_HERE&SelectedSearchFolder=/intranet&SelectedSearchFromHere=/intranet&StartUri=/intranet
However, I do not see the query string. Do I miss something? Has this anything to do with, for instance, the configuration of the URL generator service?
Another question: the URL contains the name of the portal (xxxxxxxxxx). Should this be replaced by the name of TREX server, when submitting search to TREX outside portal?
Regards
Edmond

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