While implementing a recent osCommerce store, I needed to add Mobile Money Transfer payment as another option for the customers to pay. Requirement was quite straight forward, I needed to incorporate EasyPaisa Mobile Money Transfer provided by Telenor in Pakistan which would let customers choose it as a payment option and then make the payment using phone while checking out.
I tried to search some contribution on osCommerce website but none provided this feature so I had to create one myself.
You can download this contribution here from osCommerce website
This contribution can easily be changed for other networks in more countries for similar payments by mobile money transfer.
Most probably this post is going to be the support page for this EasyPaisa Mobile Money Transfer Contribution.
Hope that helps.