Connection of external payment system

Does anybody know whether HikaShop could be connected to an external payment system like ICP?

www.icp-companies.eu/Internetbezahlung-Web-Payment.69.0.html

Hi,

For that, you need to develop a payment plugin which will connect to ICP system. We have a documentation on that: www.hikashop.com/support/documentation/62.html#payment
Their website is all in german so I would have a hard time telling you more about ICP