IMSP is a credit card merchant gateway that is integrated with WHMCS.
To activate the IMSP module in WHMCS, navigate to Setup > Payments > Payment Gateways and choose IMSP from the "All Payment Gateways" tab.
Once activated, you can then customize the name to something more friendly such as "Credit Card". To complete setup, you would then enter your credentials in the appropriate boxes.
|Type||One Time||Recurring||Refunds||3D Secure|