Talk To Your POS Terminals! Nexus Pay is owned and managed by Tang Plus Corp. At Nexus Pay, we offer small and medium business a simple and convenient way to communicate with their payment POS terminals. Most small and medium businesses do not have the resource to integrate their cash register system with their payment POS terminals. It's not surprised that most of the independent business use stand-alone payment processing terminals. Nexus Pay is the solution to let the cash register system easily talk to the payment POS terminals. It will need software to support it, current J-POS is an application that works on Ingenico Telium terminals.