{"id":847,"date":"2020-03-07T14:06:08","date_gmt":"2020-03-07T13:06:08","guid":{"rendered":"https:\/\/mobiletidings.com\/?p=847"},"modified":"2020-06-17T18:14:59","modified_gmt":"2020-06-17T17:14:59","slug":"sending-a-flash-sms-message","status":"publish","type":"post","link":"https:\/\/techsofar.com\/sending-a-flash-sms-message\/","title":{"rendered":"Sending A Flash SMS Message (Complete Guide)"},"content":{"rendered":"<p>So far I\u2019ve show how to send a text message in PDU mode. There is nothing special about this. There are a number of things you can do in PDU mode, that you can\u2019t do in text mode.<\/p>\n<p>A first example is a flash SMS message.<\/p>\n<p>A flash SMS message is an SMS message that, instead of being stored in the SIM or memory of the receiving phone, pops-up on the receiving phone\u2019s screen, without the user taking any action. When dismissed the message is usually gone.<\/p>\n<p>Here is an example AT command to send a flash SMS message in PDU mode:<\/p>\n<div>\n<pre class=\"csharpcode\">AT+CMGS=28&lt;crlf&gt;\r\n&gt; 0001010B915121551532F40010104190991D9EA341EDF27C1E3E9743&lt;Ctrl-Z&gt;<\/pre>\n<\/div>\n<div>Here is what the individual octets represent:<\/div>\n<table style=\"height: 806px;\" border=\"1\" width=\"602\">\n<tbody>\n<tr>\n<td><strong>Size<\/strong><\/td>\n<td><strong>Value<\/strong><\/td>\n<td><strong>Description<\/strong><\/td>\n<\/tr>\n<tr>\n<td>1 octet<\/td>\n<td>00<\/td>\n<td>We don\u2019t supply a SMSC number.<\/td>\n<\/tr>\n<tr>\n<td>1 octet<\/td>\n<td>01<\/td>\n<td>PDU type and options. This is a plain SUBMIT-PDU.<\/td>\n<\/tr>\n<tr>\n<td>1 octet<\/td>\n<td>01<\/td>\n<td>Our message reference.<\/td>\n<\/tr>\n<tr>\n<td>1 octet<\/td>\n<td>0B<\/td>\n<td>Size of the destination telephone number (in digits)<\/td>\n<\/tr>\n<tr>\n<td>1 octet<\/td>\n<td>91<\/td>\n<td>International numbering plan.<\/td>\n<\/tr>\n<tr>\n<td>6 octets<\/td>\n<td>5121551532f4<\/td>\n<td>This represents the destination and it translates to 1 512 555 1234<\/td>\n<\/tr>\n<tr>\n<td>1 octet<\/td>\n<td>00<\/td>\n<td>Protocol identifier.<\/td>\n<\/tr>\n<tr>\n<td>1 octet<\/td>\n<td>10<\/td>\n<td>Data Coding Scheme. This is the value that causes the message to be a flash message as opposed to a standard SMS.<\/td>\n<\/tr>\n<tr>\n<td>1 octet<\/td>\n<td>10<\/td>\n<td>User Data Length or payload size (in characters).<\/td>\n<\/tr>\n<tr>\n<td>16 septets<\/td>\n<td>4190991D9E<br \/>\nA341EDF27C<br \/>\n1E3E9743<\/td>\n<td>The payload, also known as User Data. In this case, it is just GSM encoded text.<br \/>\nThis particular string represents \u201cA flash message!\u201d\u201d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>A more elaborate explanation of the <a href=\"https:\/\/mobiletidings.com\/gsm-7-encoding-gnu-libiconv\/\" target=\"_blank\" rel=\"noopener\">GSM encoding<\/a> and other fields is giving in a previous post in this series.<\/p>\n","protected":false},"excerpt":{"rendered":"So far I\u2019ve show how to send a text message in PDU mode. There is nothing special about&hellip;\n","protected":false},"author":2,"featured_media":848,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/techsofar.com\/wp-content\/uploads\/2020\/03\/flash-sms.jpg","_links":{"self":[{"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/posts\/847"}],"collection":[{"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/comments?post=847"}],"version-history":[{"count":0,"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/posts\/847\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/media\/848"}],"wp:attachment":[{"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/media?parent=847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/categories?post=847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techsofar.com\/wp-json\/wp\/v2\/tags?post=847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}