Linking external payment system

Linking external payment system

Hello
Right now we are using our own credit card system for our customers. We would like to switch over to Joomshopping.
My question is if it is possible to link up our credit card payment system to Joomshopping cart? so that the customer can pay without going out of joomshopping.
If so please let me know how to link it up.
Regards
Vin

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Aw: Linking external payment system

See example
components\com_jshopping\payments\pm_paypal\..