You will need to check directly with the PSP whether their EFTPOS terminal integrates with your specific POS system  - please refer to the Payment Service Provider Information pages for relevant contact details, resources and links.
Note that major banks typically use Linkly for POS integrations. Suncorp, Live Payments and Fiserv also use Linkly for POS integrations. Refer to the Linkly list of accredited POS vendors for further information.
SmartPay does direct POS integrations rather then using a third party such as Linkly - please contact SmartPay to confirm that your POS system is supported.