{"id":3656,"date":"2021-04-11T13:22:05","date_gmt":"2021-04-11T12:22:05","guid":{"rendered":"http:\/\/www.freedmr.uk\/?page_id=3656"},"modified":"2023-06-20T11:33:08","modified_gmt":"2023-06-20T10:33:08","slug":"loop-control","status":"publish","type":"page","link":"https:\/\/www.freedmr.uk\/index.php\/loop-control\/","title":{"rendered":"Loop Control"},"content":{"rendered":"<p style=\"text-align: center;\"><b><span style=\"color: #ff0000; font-size: 270%;\">Loop Control<\/span><\/b><\/p>\n<h4>Cross-mode, multi mode or analogue etc<\/h4>\n<p><strong>Should not &#8211;<\/strong><br \/>\n<span style=\"color: #ff0000;\">* <\/span>Go to more than one Talk Group on FreeDMR Network via OpenBridge.<br \/>\n<span style=\"color: #ff0000;\">*<\/span> Go to more than one Server on FreeDMR Network<br \/>\nBe bridged to each other and back to same Talk Group ( Loop )<\/p>\n<p>As Server owners you need to make sure any and all <strong><em>cross-mode, multi mode or analogue etc<\/em><\/strong> you permit to your server is set-up correct.<br \/>\nThis can be done by asking for a architecture diagram of the set-up they offer.<\/p>\n<p>Cross-mode, multi mode or analogue etc owners. Also need to make sure they do not introduce a loop into the FreeDMR Network. If you do, this will result in your link being terminated until it is fixed.<\/p>\n<p>First rule :-\u00a0\u00a0 &#8220;KNOW WHAT YOU ARE DOING&#8221;<br \/>\nSecond rule :-\u00a0\u00a0 Just because you can, does not mean you should.<\/p>\n<p><em>Switch = Cross-mode, multi mode or analogue etc<\/em><\/p>\n<style type=\"text\/css\" scoped>.rbs_gallery_69d611c787318Spinner{\r\n\t\t\t\tmargin: 50px auto;\r\n\t\t\t\twidth: 50px;\r\n\t\t\t\theight: 40px;\r\n\t\t\t\ttext-align: center;\r\n\t\t\t\tfont-size: 10px;\r\n\t\t\t}\r\n\t\t\t.rbs_gallery_69d611c787318Spinner > div{\r\n\t\t\t  background-color: #333;\r\n\t\t\t  height: 100%;\r\n\t\t\t  width: 6px;\r\n\t\t\t  display: inline-block;\r\n\t\t\t  -webkit-animation: rbs_gallery_69d611c787318-stretchdelay 1.2s infinite ease-in-out;\r\n\t\t\t  animation: rbs_gallery_69d611c787318-stretchdelay 1.2s infinite ease-in-out;\r\n\t\t\t}\r\n\t\t\t.rbs_gallery_69d611c787318Spinner .rbs_gallery_69d611c787318Rect2 {\r\n\t\t\t  -webkit-animation-delay: -1.1s;\r\n\t\t\t  animation-delay: -1.1s;\r\n\t\t\t}\r\n\t\t\t.rbs_gallery_69d611c787318Spinner .rbs_gallery_69d611c787318Rect3 {\r\n\t\t\t  -webkit-animation-delay: -1.0s;\r\n\t\t\t  animation-delay: -1.0s;\r\n\t\t\t}\r\n\t\t\t.rbs_gallery_69d611c787318Spinner .rbs_gallery_69d611c787318Rect4 {\r\n\t\t\t  -webkit-animation-delay: -0.9s;\r\n\t\t\t  animation-delay: -0.9s;\r\n\t\t\t}\r\n\t\t\t.rbs_gallery_69d611c787318Spinner .rbs_gallery_69d611c787318Rect5 {\r\n\t\t\t  -webkit-animation-delay: -0.8s;\r\n\t\t\t  animation-delay: -0.8s;\r\n\t\t\t}\r\n\t\t\t@-webkit-keyframes rbs_gallery_69d611c787318-stretchdelay {\r\n\t\t\t  0%, 40%, 100% { -webkit-transform: scaleY(0.4) }  \r\n\t\t\t  20% { -webkit-transform: scaleY(1.0) }\r\n\t\t\t}\r\n\t\t\t@keyframes rbs_gallery_69d611c787318-stretchdelay {\r\n\t\t\t  0%, 40%, 100% { \r\n\t\t\t    transform: scaleY(0.4);\r\n\t\t\t    -webkit-transform: scaleY(0.4);\r\n\t\t\t  }  20% { \r\n\t\t\t    transform: scaleY(1.0);\r\n\t\t\t    -webkit-transform: scaleY(1.0);\r\n\t\t\t  }\r\n\t\t\t}\r\n\t\t<\/style><div class=\"robo-gallery-wrap robo-gallery-wrap-id3832 robo-gallery-grid\" ><div id=\"rbs_gallery_69d611c787318-block-loader\" class=\"rbs_gallery_69d611c787318Spinner\"><div class=\"rbs_gallery_69d611c787318Rect1\"><\/div> <div class=\"rbs_gallery_69d611c787318Rect2\"><\/div> <div class=\"rbs_gallery_69d611c787318Rect3\"><\/div> <div class=\"rbs_gallery_69d611c787318Rect4\"><\/div> <div class=\"rbs_gallery_69d611c787318Rect5\"><\/div><\/div><div id=\"robo_gallery_main_block_rbs_gallery_69d611c787318\" class=\"robogallery-gallery-3832\" style=\"width:102%;margin:0 auto; 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a single isolated XLX from a server bridged to a Talk Group.\u00a0 If a whole network of peered XLX sits behind it, there is too high a risk that you will interdependently create a loop.<br \/>\nIf you need several XLX servers, they should connect to the DMR network as individual servers at different points, not peer together and connect to DMR.<\/p>\n<p>XLX &lt;-&gt; TG = <span style=\"color: #20bd67;\">fine<\/span><br \/>\nTG &lt;-&gt; XLX &lt;-&gt; XLX &lt;-&gt; TG &#8211; <span style=\"color: #ff0000;\">not fine!<br \/>\n<\/span>Server &lt;-&gt; TG &lt;-&gt; XLX &lt;-&gt; TG &lt;-&gt; Server &#8211;<span style=\"color: #ff0000;\"> not fine!<br \/>\n<\/span><\/p>\n<h4>Part 2<\/h4>\n<p>Be very, very, careful.<\/p>\n<p>In general, we are going to need (unfortunately but stick with me) a gentlemen&#8217;s (women&#8217;s) agreement on this based on common sense. I call it the &#8220;one hop&#8221; rule.<\/p>\n<p>We are primarily a DMR network.\u00a0 When connecting other systems, you can do so if there is only one &#8220;hop&#8221;. I.E, it is directly connected to your FreeDMRr Server.\u00a0 What we don&#8217;t want is further hops.\u00a0 So, one XLX connected to a TG on FreeDMR is fine.\u00a0 One XLX connected to a TG on FreeDMR and then peered with other XLX systems is not fine.<\/p>\n<p>The reason for this is as the external network gets bigger, the probability that at some stage this network is linked back in to freedmr, accidentally or on purpose gets higher.\u00a0 XLX is a particular problem here.<\/p>\n<h6>Again, we are building a DMR network, not a YSF, D-Star or multi-mode one&#8230;.<\/h6>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>Use the <a href=\"https:\/\/www.freedmr.uk\/index.php\/world-wide-talk-groups\/\" target=\"_blank\" rel=\"noopener\">World Wide Talk Group List<\/a> to see if a bridge has already been set-up.<br \/>\nIf you do set-up a Bridge to a Talk Group.\u00a0 <a href=\"https:\/\/t.me\/FreeDMR_Building_Server_Support\" target=\"_blank\" rel=\"noopener\">Please let us know<\/a>, so the list can be updated.<\/p>\n<p>For Bridging to United Kingdom Talk Groups. <a href=\"https:\/\/www.freedmr.uk\/index.php\/information\/#Bridge\" target=\"_blank\" rel=\"noopener\">Please read this<\/a>.<\/p>\n<hr \/>\n<p><span style=\"color: #ff0000;\">*<\/span> <span style=\"color: #ff0000;\">IF<\/span> you <span style=\"color: #ff0000;\">MUST<\/span> have a Talk Group go to a Talk Group that is already in use with a Bridge.<br \/>\nSet your Talk Group as <a href=\"https:\/\/www.freedmr.uk\/index.php\/some-rules-for-opb\/\">Local only<\/a> and not have it go out on the OPB.<br \/>\nThis will stop <a href=\"https:\/\/www.freedmr.uk\/index.php\/loop-control\/\">Looping<\/a>.<br \/>\n<span style=\"color: #ff0000;\">BUT<\/span> still better to just use the original Talk group. Rather than making your own.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Loop Control Cross-mode, multi mode or analogue etc Should not &#8211; * Go to more than one Talk Group on FreeDMR Network via OpenBridge. * Go to more than one Server on FreeDMR Network Be bridged to each other and back to same Talk Group ( Loop ) As Server owners you need to make &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.freedmr.uk\/index.php\/loop-control\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Loop Control&#8221;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_lmt_disableupdate":"no","_lmt_disable":""},"_links":{"self":[{"href":"https:\/\/www.freedmr.uk\/index.php\/wp-json\/wp\/v2\/pages\/3656"}],"collection":[{"href":"https:\/\/www.freedmr.uk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.freedmr.uk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.freedmr.uk\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.freedmr.uk\/index.php\/wp-json\/wp\/v2\/comments?post=3656"}],"version-history":[{"count":2,"href":"https:\/\/www.freedmr.uk\/index.php\/wp-json\/wp\/v2\/pages\/3656\/revisions"}],"predecessor-version":[{"id":10544,"href":"https:\/\/www.freedmr.uk\/index.php\/wp-json\/wp\/v2\/pages\/3656\/revisions\/10544"}],"wp:attachment":[{"href":"https:\/\/www.freedmr.uk\/index.php\/wp-json\/wp\/v2\/media?parent=3656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}