{"id":1509,"date":"2013-02-13T12:43:46","date_gmt":"2013-02-13T12:43:46","guid":{"rendered":"http:\/\/more-coffee.co.uk\/wordpress\/?page_id=1509"},"modified":"2013-02-13T12:43:46","modified_gmt":"2013-02-13T12:43:46","slug":"traffic-case-gprs-attach","status":"publish","type":"page","link":"https:\/\/more-coffee.co.uk\/?page_id=1509","title":{"rendered":"Traffic Case &#8211; GPRS Attach"},"content":{"rendered":"<p align=\"left\"><span style=\"font-family: Verdana; font-size: small;\">In order for the GPRS MS to receive or transmit data the end user needs to perform a two-step procedure, GPRS attach (Figure 21) ND PDP context activation (Figure 22)<br \/>\n<\/span><\/p>\n<div>\n<figure id=\"attachment_1510\" aria-describedby=\"caption-attachment-1510\" style=\"width: 602px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/more-coffee.co.uk\/wordpress\/wp-content\/uploads\/2013\/02\/attach191.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1510\" alt=\"Figure 22 GPRS attach (1) and PDP context activation (2)\" src=\"http:\/\/more-coffee.co.uk\/wordpress\/wp-content\/uploads\/2013\/02\/attach191.jpg\" width=\"602\" height=\"220\" \/><\/a><figcaption id=\"caption-attachment-1510\" class=\"wp-caption-text\">Figure 22 GPRS attach (1) and PDP context activation (2)<\/figcaption><\/figure>\n<\/div>\n<p align=\"left\"><span style=\"font-family: Verdana; font-size: small;\">At GPRS attach a logical link is established between MS and SGSN, the GPRS attachment procedure in Figure 23.<\/span><\/p>\n<div>\n<p style=\"text-align: left;\" align=\"center\"><span style=\"font-family: Verdana; font-size: small;\">\u00a0<\/span><\/p>\n<figure id=\"attachment_1511\" aria-describedby=\"caption-attachment-1511\" style=\"width: 659px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/more-coffee.co.uk\/wordpress\/wp-content\/uploads\/2013\/02\/attach201.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1511\" alt=\"Figure 23 GPRS Attach\" src=\"http:\/\/more-coffee.co.uk\/wordpress\/wp-content\/uploads\/2013\/02\/attach201.jpg\" width=\"659\" height=\"305\" \/><\/a><figcaption id=\"caption-attachment-1511\" class=\"wp-caption-text\">Figure 23 GPRS Attach<\/figcaption><\/figure>\n<p align=\"right\"><span style=\"font-family: Verdana; font-size: small;\">\u00a0<\/span><\/p>\n<\/div>\n<p align=\"left\"><span style=\"font-family: Verdana; font-size: small;\">MS sends message to SGSN: &#8220;attach request&#8221;.<\/p>\n<p>If the MS is not known by the SGSN it asks the old SGSN about the IMSI and triplets.<\/p>\n<p>If the MS is not known by the old SGSN it sends an error message to the new SGSN and the new SGSN asks MS about IMSI.<\/p>\n<p>SGSN authenticates MS.<\/p>\n<p>Update HLR (if new SGSN service area).<\/p>\n<p>Update MSC\/VLR (only necessary if new LA).<\/p>\n<p>SGSN tell the MS about new TLLI (Temporary Location Link ID).<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In order for the GPRS MS to receive or transmit data the end user needs to perform a two-step procedure, GPRS attach (Figure 21) ND PDP context activation (Figure 22) At GPRS attach a logical link is established between MS and SGSN, the GPRS attachment procedure in Figure 23. \u00a0 \u00a0 MS sends message to&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":1492,"menu_order":0,"comment_status":"open","ping_status":"open","template":"template-twocolumnsright.php","meta":{"footnotes":""},"class_list":["post-1509","page","type-page","status-publish","hentry"],"jetpack-related-posts":[],"jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/more-coffee.co.uk\/index.php?rest_route=\/wp\/v2\/pages\/1509","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/more-coffee.co.uk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/more-coffee.co.uk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/more-coffee.co.uk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/more-coffee.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1509"}],"version-history":[{"count":0,"href":"https:\/\/more-coffee.co.uk\/index.php?rest_route=\/wp\/v2\/pages\/1509\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/more-coffee.co.uk\/index.php?rest_route=\/wp\/v2\/pages\/1492"}],"wp:attachment":[{"href":"https:\/\/more-coffee.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}