<style id="elementor-post-dynamic-3128">.elementor-3128 .elementor-element.elementor-element-34d93ad5:not(.elementor-motion-effects-element-type-background), .elementor-3128 .elementor-element.elementor-element-34d93ad5 > .elementor-motion-effects-container > .elementor-motion-effects-layer{background-image:url("https://omespay.be/wp-content/uploads/2026/09/Logo-post-image-scaled.png");}</style>{"id":3128,"date":"2026-09-13T13:36:16","date_gmt":"2026-09-13T13:36:16","guid":{"rendered":"https:\/\/omespay.be\/?p=3128"},"modified":"2026-09-13T17:42:57","modified_gmt":"2026-09-13T17:42:57","slug":"hoe-werkt-kassakoppeling-betaalterminal","status":"publish","type":"post","link":"https:\/\/omespay.be\/en\/hoe-werkt-kassakoppeling-betaalterminal\/","title":{"rendered":"How does a connection between a point-of-sale system and a payment terminal work?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3128\" class=\"elementor elementor-3128\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-34d93ad5 e-flex e-con-boxed e-con e-parent\" data-id=\"34d93ad5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4955e5f7 e-flex e-con-boxed e-con e-parent\" data-id=\"4955e5f7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5c761d7d e-con-full e-flex e-con e-child\" data-id=\"5c761d7d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-669f7f63 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"669f7f63\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">How does a connection between a point-of-sale system and a payment terminal work?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-222fc951 elementor-widget elementor-widget-post-info\" data-id=\"222fc951\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-a2086e6 elementor-inline-item\" itemprop=\"about\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-tags\" viewbox=\"0 0 640 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M497.941 225.941L286.059 14.059A48 48 0 0 0 252.118 0H48C21.49 0 0 21.49 0 48v204.118a48 48 0 0 0 14.059 33.941l211.882 211.882c18.744 18.745 49.136 18.746 67.882 0l204.118-204.118c18.745-18.745 18.745-49.137 0-67.882zM112 160c-26.51 0-48-21.49-48-48s21.49-48 48-48 48 21.49 48 48-21.49 48-48 48zm513.941 133.823L421.823 497.941c-18.745 18.745-49.137 18.745-67.882 0l-.36-.36L527.64 323.522c16.999-16.999 26.36-39.6 26.36-63.64s-9.362-46.641-26.36-63.64L331.397 0h48.721a48 48 0 0 1 33.941 14.059l211.882 211.882c18.745 18.745 18.745 49.137 0 67.882z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-terms\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-post-info__terms-list\">\n\t\t\t\t<span class=\"elementor-post-info__terms-list-item\">Point-of-Sale Systems<\/span>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-6bd7875 elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-user\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224 256c70.7 0 128-57.3 128-128S294.7 0 224 0 96 57.3 96 128s57.3 128 128 128zm89.6 32h-16.7c-22.2 10.2-46.9 16-72.9 16s-50.6-5.8-72.9-16h-16.7C60.2 288 0 348.2 0 422.4V464c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48v-41.6c0-74.2-60.2-134.4-134.4-134.4z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\tOmEs Pay\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-3b6be0f elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-calendar\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M12 192h424c6.6 0 12 5.4 12 12v260c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V204c0-6.6 5.4-12 12-12zm436-44v-36c0-26.5-21.5-48-48-48h-48V12c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v52H160V12c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v52H48C21.5 64 0 85.5 0 112v36c0 6.6 5.4 12 12 12h424c6.6 0 12-5.4 12-12z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>September 13, 2026<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55d9add4 elementor-widget elementor-widget-text-editor\" data-id=\"55d9add4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Behind that simple experience lies a stream of messages between the point-of-sale software, the terminal, and the payment provider. When that stream is well-designed, it speeds up the checkout process and makes discrepancies easier to trace. If exceptions are missing, however, a network problem can actually lead to duplicate or uncertain payments.<\/p><h4><strong>Step 1: The register generates a payment order<\/strong><\/h4><p>The register records the sales amount and creates a transaction with a unique reference number. Depending on the interface, the transaction is sent either directly to a terminal on the local network or through the provider\u2019s cloud environment.<\/p><p>The reference is important for linking a future status, refund, or support request to the same sale.<\/p><p>Read more about how to keep your cash register secure <a href=\"https:\/\/omespay.be\/en\/kassasystemen\/kassakoppeling-betaal-api\/\"><strong>Connect it to your payment terminal or payment API.<\/strong><\/a><\/p><h4><strong>Step 2: The terminal processes the customer's action<\/strong><\/h4><p>The customer holds a card or wallet up to the device, inserts a card, or follows the supported authentication step. The terminal communicates with the payment network and displays a result.<\/p><p>The point-of-sale system itself should not require any card information. It only processes the necessary payment instruction and status.<\/p><p>See also which <a href=\"https:\/\/omespay.be\/en\/betaaloplossingen\/betaalterminals\/\"><strong data-start=\"1488\" data-end=\"1507\">payment terminals<\/strong> <\/a>be compatible with various payment methods.<\/p><h4><strong>Step 3: The status returns<\/strong><\/h4><p>The integration reports a status of \"successful,\" \"declined,\" \"canceled,\" or another status. If successful, the register completes the appropriate sale. If declined, the bill remains open for a new payment method.<\/p><p>A timeout does not automatically mean that the payment has failed. The application must be able to retrieve the final status.<\/p><h4><strong>Local and Cloud Connections<\/strong><\/h4><p>Local protocols operate within the business and can connect to fixed or mobile terminals. Cloud APIs are suitable for centralized or online applications and use the internet, credentials, and webhooks.<\/p><p>The selection is based on the officially supported combination of POS system, terminal, and provider.<\/p><p>You can read more about the technical capabilities at <a href=\"https:\/\/omespay.be\/en\/kassasystemen\/kassakoppeling-betaal-api\/\"><strong data-start=\"1029\" data-end=\"1061\">POS integration and payment API<\/strong>.<\/a><\/p><h4><strong>Minimum test set<\/strong><\/h4><ul><li>Payment Successful<\/li><li>Refusal and Cancellation<\/li><li>Timeout with status query<\/li><li>Double-click or repeated request<\/li><li>Restarting the cash register and terminal<\/li><li>Refund if supported<\/li><li>End-of-Day Closing and Reference Matching<\/li><\/ul><h4><strong>Making the right choice starts with how you operate<\/strong><\/h4><p>A point-of-sale integration is only reliable if the POS system can not only send a payment amount but also correctly handle uncertain and erroneous scenarios. Therefore, be sure to ask for official support and verifiable testing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7f2e003 e-flex e-con-boxed e-con e-parent\" data-id=\"7f2e003\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-745a7a47 e-con-full e-flex e-con e-child\" data-id=\"745a7a47\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-77570bc1 e-con-full e-flex e-con e-child\" data-id=\"77570bc1\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-71262965 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"71262965\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Have your current combination validated<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ded9b23 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"2ded9b23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div id=\"comp-mkazuzvd\" class=\"N8MGzv _v6ohL PO9MfV AWXfZq comp-mkazuzvd wixui-rich-text\" data-testid=\"richTextElement\" data-motion-enter=\"done\"><section id=\"comp-mkb8fsud\" class=\"ke5pl1 comp-mkb8fsud wixui-section fwXYgt\" tabindex=\"-1\" data-block-level-container=\"Section\" data-testid=\"section-container\"><div class=\"comp-mkb8fsud-container max-width-container\" role=\"group\" data-testid=\"responsive-container-content\"><div id=\"comp-mkb8mdfh\" class=\"HFEOE3 NaeT1r comp-mkb8mdfh-container comp-mkb8mdfh wixui-box\" dir=\"ltr\" role=\"\"><div id=\"comp-mkb8j35m\" class=\"HFEOE3 NaeT1r comp-mkb8j35m-container comp-mkb8j35m wixui-box\" dir=\"ltr\" role=\"\"><div id=\"comp-mkb8j36a\" class=\"N8MGzv _v6ohL PO9MfV AWXfZq comp-mkb8j36a wixui-rich-text\" data-testid=\"richTextElement\"><div data-tsd-source=\"\/src\/routes\/offerte-aanvragen.tsx:50:148\"><p>OmEs Pay checks the POS version, terminal model, provider, and protocol, and tests the payment flow in your actual environment.<\/p><\/div><\/div><\/div><\/div><\/div><\/section><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5572658b elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"5572658b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/omespay.be\/en\/offerte-aanvragen\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-right-arrow\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Have your payment flow validated<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Behind that simple experience lies a stream of messages between the point-of-sale software, the terminal, and the payment provider. When that stream is well-designed, it speeds up the checkout process and makes discrepancies easier to trace. If exceptions are missing, however, a network problem can actually lead to duplicate or uncertain payments.<\/p>","protected":false},"author":3,"featured_media":2572,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[27],"class_list":["post-3128","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kassasystemen","tag-kassakoppeling-api"],"_links":{"self":[{"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/posts\/3128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/comments?post=3128"}],"version-history":[{"count":0,"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/posts\/3128\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/media\/2572"}],"wp:attachment":[{"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/media?parent=3128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/categories?post=3128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/omespay.be\/en\/wp-json\/wp\/v2\/tags?post=3128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}