Eloqua External system/WSDL call.

Hi Expert.

I was wondering if some of you can give some highlights about external CRM system configuration for Eloqua integration with external system (Can be another middletier). I saw in the documents and system,Its talking about only Fusion and CRM OD OOTB integration.

But If I want to invoke any other system,how to setup that ? Now in Eloqua environemnt,I can see it provides to create a new CRM user,but I want to create a new CRM system and create the data mapping of it.

Another example if how can I invoke a WSDL from Eloqua?

Please help.

Regards

Mrinmoy.