Needs to create one payment option like as paypal in that we will post params to payment gateway website and they will redirect us back.
Once we received response from payment option we needs to do one server call (just curl call) to pg to confirm the transaction is done or not
Payment gateway integration document is attached here. This document is confidential so please take care of it.
Website Url: http://ekart.aksharecommerce.com
Please provides us timeline and quote.