{"id":27,"date":"2026-04-07T16:23:08","date_gmt":"2026-04-07T16:23:08","guid":{"rendered":"http:\/\/localhost:8080\/knowledge-base\/403-failed-to-get-a-destination-sbc\/"},"modified":"2026-04-12T19:03:51","modified_gmt":"2026-04-12T19:03:51","slug":"403-failed-to-get-a-destination-sbc","status":"publish","type":"post","link":"https:\/\/www.siperb.com\/kb\/403-failed-to-get-a-destination-sbc\/","title":{"rendered":"403 Failed to get a destination SBC"},"content":{"rendered":"\n<p>If you see the error message <code>403 Failed to get a destination SBC<\/code>, it means that the platform was unable to route your call because there is no matching <strong>Session Border Controller (SBC)<\/strong> for the number you dialed.<\/p>\n\n\n\n<p>This typically happens for one of two reasons:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. No Connections Configured<\/h3>\n\n\n\n<p>You have not set up any <strong><a href=\"\/kb\/article\/an-introduction-to-connections\/\">Connections<\/a><\/strong> in your account. Connections define where and how calls should be routed \u2014 for example, to your own PBX or SIP provider.<\/p>\n\n\n\n<p><strong>How to fix it:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Go to the <strong>Connections<\/strong> section in the Admin Control Panel.<\/li>\n\n\n\n<li>Create a new Connection and define its matching pattern (e.g., all calls starting with <code>+44<\/code> or specific area codes).<\/li>\n\n\n\n<li>Make sure the Connection includes a valid endpoint (your PBX or ISP) that can handle calls.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Number Doesn\u2019t Match Any Connection Pattern<\/h3>\n\n\n\n<p>You <strong>have<\/strong> configured Connections, but the number you\u2019re trying to call doesn\u2019t match any of the patterns defined in your existing Connections.<\/p>\n\n\n\n<p>For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You have a Connection set up for numbers starting with <code>+1<\/code> (USA), but you\u2019re trying to call a <code>+44<\/code> (UK) number.<\/li>\n\n\n\n<li>The pattern in your Connection is too restrictive or doesn\u2019t account for your intended destination.<\/li>\n<\/ul>\n\n\n\n<p><strong>How to fix it:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Review your Connection patterns under the <strong>Connections<\/strong> tab.<\/li>\n\n\n\n<li>Adjust your match patterns to ensure they cover the full range of numbers you want to allow.<\/li>\n\n\n\n<li>Use a wildcard pattern like <code>.<\/code> to match all numbers (for testing purposes), but be sure to narrow it down in production to avoid misrouting.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">How do i see the SIP Trace<\/h3>\n\n\n\n<p>If you no longer get this message after your changes, well done, but you may wonder how you can see the SIP traces.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you see the error message 403 Failed to get a destination SBC, it means that the platform was unable to route your call because there is no matching Session Border Controller (SBC) for the number you dialed.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-27","post","type-post","status-publish","format-standard","hentry","category-connections"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>403: Failed to Get a Destination SBC<\/title>\n<meta name=\"description\" content=\"Troubleshooting the 403 &#039;Failed to get a destination SBC&#039; error in Siperb \u2014 what causes it, what it means, and how to fix it.\" \/>\n<meta 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