{"id":22003,"date":"2024-03-30T10:57:54","date_gmt":"2024-03-30T05:27:54","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=22003"},"modified":"2025-04-06T16:47:19","modified_gmt":"2025-04-06T11:17:19","slug":"unstructured-supplementary-service-data-ussd","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/unstructured-supplementary-service-data-ussd\/","title":{"rendered":"Unstructured Supplementary Service Data (USSD)"},"content":{"rendered":"<p>The DoT said that it has come to its notice that USSD based call forwarding facility, most commonly known *401# services for unconditional call forwarding services, is being misused for some unwarranted activities.<\/p>\n<h2>About Unstructured Supplementary Service Data (USSD)<\/h2>\n<ul>\n<li>It is a\u00a0communications protocol used in\u00a0Global System for Mobile Communications (GSM) networks for sending short text messages.<\/li>\n<li>It is an instant messaging service and messages are\u00a0not stored on the operator side or on the\u00a0subscriber\u2019s device.<\/li>\n<li>USSD format: It generally exist as one of two types, depending on their origin:\n<ul>\n<li>A USSD Pull is an outgoing request from the user in the form of an MMI command.<\/li>\n<li>A USSD Push is a message from the operator that is displayed on the user\u2019s screen.<\/li>\n<li>The user can send the operator a request in the form of a USSD command. Commands consist of\u00a0the * and # characters and numeric codes.<\/li>\n<li>The chain begins with * or # (which can occur more than once, separating commands from subcommands) and usually ends with #.<\/li>\n<li>The maximum length of a USSD message is 182 characters, but in practice even the longest requests rarely exceed 20.<\/li>\n<\/ul>\n<\/li>\n<li>It is usedto display balance deduction in mobile phones where a message pops-up on the device screen after a call or outgoing SMS.It is also used for checking IMEI numbers of mobiles.<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What is the International Mobile Equipment Identity (IMEI) number?<\/h3>\n<p>The International Mobile Equipment Identity or IMEI is a unique number that is used to identify a device on a mobile network. It has 15 digits, and is like your phone\u2019s unique identity.<\/p>\n<p><strong>Source:<\/strong> <a href=\"https:\/\/economictimes.indiatimes.com\/industry\/telecom\/telecom-policy\/dot-asks-telcos-to-suspend-ussd-based-call-forwarding-switch-to-alternate-mode-from-apr-15\/articleshow\/108882510.cms?from=mdr\" target=\"_blank\" rel=\"nofollow noopener\">DoT asks telcos to suspend USSD-based call forwarding, switch to alternate mode from Apr 15<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Unstructured Supplementary Service Data (USSD) is a communications protocol used in Global System for Mobile Communications (GSM) networks for sending short text messages.<\/p>\n","protected":false},"author":5,"featured_media":22004,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-22003","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/22003","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=22003"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/22003\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/22004"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=22003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=22003"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=22003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}