ING's paymul required in NF Telebanking

I am wondering if anyone has made an Export protocol in navision based on the paymul protocol by ING bank.

I had contacts with the ING Bank and received the full description of the file formats. But I didn’t start on it, due to heavy complexity and lack of interest from my customer. If you however should have a solution, I would be most interested in it… May the source be with you