How to Integration SAP ECC and OSISoft through SAP XI/PI?

Hi,

Short Discription about the Product OSIsoft:

OSIsoft has certified integrations for SAP PP-PI (Production Planning-Process Industries), SAP-PM (Plant Maintenance) and SAP-QM (Quality Management) modules.

Additionally, OSIsoftu2019s RtPM Business Package for SAP Portal (Certified for SAP NetWeaver) allows users to link and correlate PI and SAP data and display in SAP Enterprise Portal.

So taking the above functionality in consideration I want to use XI to send data to SAP PP PI or SAP QM or poll data from SAP PP PI or SAP QM.

Can any one give me the suggest me how to start of with.

Thanks in Advance.

Best Regards,

Joseph