[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-396320-105":59,"doc-detail-396320-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","3g-change-requests-part","3G Change Requests - Part","","Agenda item T2 for approval at the 3GPP TSG-2 meeting #4 in Miami (14-16 June 1999) presents a 3G Change Request related to 27.010 CR A1. It clarifies how to handle the length field in basic mode across all situations, and includes an editorial correction concerning the UI frame. The request specifies affected clauses and provides detailed technical definitions for the length indicator (including EA-bit extension and bit formats) plus the Frame Checking Sequence (FCS) calculation behavior, noting UIH handling where the I-field is excluded.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/3g-change-requests-part/396320/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/3g-change-requests-part/396320.png","ImageObject",300,407,{"name":92,"@type":93},"Dipper","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-19","2026-09-26",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What problem does this change request address?","Question",{"text":112,"@type":113},"It clarifies how the length field in basic mode should be handled in all situations. It also corrects an editorial error in the section about the UI frame.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"When is the length indicator field present?",{"text":117,"@type":113},"The length field is present only when the basic option is activated.",{"name":119,"@type":110,"acceptedAnswer":120},"How is the FCS calculated for UIH frames?",{"text":121,"@type":113},"For UIH frames, FCS is calculated over only the address, control, and length fields, and the I-field content is not included in the calculation.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},396320,1790535345,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":39,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},1374404997633,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","3GPP TSG-T\\#4 TSGT\\#4(99)124  \nMiami, US, 17-18 June 1999  \nAgenda Item:  \nSource: T2  \nTitle: 3G Change Requests  \nDocument for: approval  \n3GPP TSG-2 meeting \\#4 Document T2-99498  \nMiami, USA, 14-16 June 1999  \n\n| 3G CHANGE REQUEST\u003Cbr> 27.010  CR  A1  Current Version:  3.0.0 \u003Cbr>|  |\n| --- | --- |\n| For submision to TSG  \\#4  for approval for information | X |\n\nForm: 3G CR cover sheet, version 1.0 [The latest version of this form is available from: ftp://ftp.3gpp. org/Information/3GCRF-xx. rtf](The latest version of this form is available from: ftp://ftp.3gpp. org/Information/3GCRF-xx. rtf)  \n(at least one should be marked with an X)  \nSource:  T2   Date:  1999-06-16   \nSubject:  \n3G Work item:  \nClarification of how to handle the length field in basic mode  \nTEI  \nCategory:  \n(only one category shall be marked with an X)  \nF  \nA  \nB  \nC  \nD  \nCorrection  \nCorresponds to a correction in a 2G specification Addition of feature  \nFunctional modification of feature  \nEditorial modification  \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n| X |\n\nReason for change:  \nIn the 07.10 specification it is not totally clear how the length field in basic mode shall be handle in all situations. To avoid misunderstandings these situations have to be clarified.This CR also corrects an editorial error in the section about the UI frame.  \nClauses affected:  \nOther specs affected:  \nOther 3G core specifications  \nOther 2G core specifications MS test specifications BSS test specifications O&M specifications  \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n|  |\n\n→ List of CRs:  \n→ List of CRs:  \n→ List of CRs:  \n→ List of CRs:  \n→ List of CRs:  \nOther  \ncomments:  \nhelp.doc  \n\u003C---------double-click here for help and instructions on how to create a CR.  \nError! No text of specified style in document. 2 Error! No text of specified style in document.  \n5.2.1.5 Length Indicator  \nThis field is present only in case when basic option is activated.  \nIt has the following format:  \nBit  \n\n| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |\n| --- | --- | --- | --- | --- | --- | --- | --- |\n| E/A | L1 | L2 | L3 | L4 | L5 | L6 | L7 |\n\nFigure 1: Length field, first byte  \nThe L1 to L7 bits indicates the length of the following data field. The default length is 31 bytes.  \nAccording to the rule of ISO/IEC 13239:1997, the range of the length field may be extended by use of the EA bit. When the EA bit is set to 1 in an octet, it is signifies that this octet is the last octet of the length field. When the EA bit is set to 0, it signifies that a second octet of the length field follows. The total length of the length field is in that case 15bits, L1-L15 .  \nThe second octet of the length field (only present when the EA field in the first byte is set to 1) format:  \nBit  \n\n| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |\n| --- | --- | --- | --- | --- | --- | --- | --- |\n| L8 | L9 | L10 | L11 | L12 | L13 | L14 | L15 |\n\nFigure 2: Length field, second byte  \nThe length field shall always be present, even if the data field is empty.  \nETSI  \nError! No text of specified style in document. 3 Error! No text of specified style in document.  \n5.2.1.6 Frame Checking Sequence Field (FCS)  \nThe FCS shall be the ones complement of the sum (modulo 2) of a) the remainder of  \nxk (x7 + x6 + x5 + x4 + x3 + x2 + x 1 + 1)  \ndivided (modulo 2) by the generator polynomial  \nx8 + x2 + x + 1,  \nwhere k is the number of bits in the frame existing between, but not including, the final bit of the opening flag and the first bit of the FCS, excluding start and stop elements (start/stop transmission), and bits (synchronous transmission) and octets (start/stop transmission) inserted for transparency, and  \nb) the remainder of the division (modulo 2) by the generator polynomial  \nx8 + x2 + x + 1  \nof the product of x8 by the content of the frame existing between, but not including, the final bit of the opening flag and the first bit of the FCS, excluding start and stop elements (start/stop transmission), and bits (synchronous transmission) and octets (start/sto","cbCaibLuGpTNY5DH","https://ap.wps.com/l/cbCaibLuGpTNY5DH","pdf",113586,28,"English","# 3G Change Requests\n## Reason for change\n## Length Indicator (5.2.1.5)\n## Frame Checking Sequence Field (FCS) (5.2.1.6)\n## Unnumbered information with header check (UIH)","[{\"question\":\"What problem does this change request address?\",\"answer\":\"It clarifies how the length field in basic mode should be handled in all situations. It also corrects an editorial error in the section about the UI frame.\"},{\"question\":\"When is the length indicator field present?\",\"answer\":\"The length field is present only when the basic option is activated.\"},{\"question\":\"How is the FCS calculated for UIH frames?\",\"answer\":\"For UIH frames, FCS is calculated over only the address, control, and length fields, and the I-field content is not included in the calculation.\"}]","3G Change Requests - Part | PDF",1790438981,71]