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The recommendation groups terms into thematic sections, incorporates considerations for the evolution toward integrated digital networks and ISDN, and notes relationships with specialized glossaries attached to other G, Q, and Z series recommendations. It also includes conventions for qualifiers, deprecated terms, regional usage markers, and multiple definitions per term.",{"@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":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/vocabulary-of-switching-and-signalling-terms-recommendation-q9-vocabulary/427978/",{"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/vocabulary-of-switching-and-signalling-terms-recommendation-q9-vocabulary/427978.png","ImageObject",300,407,{"name":92,"@type":93},"วิน","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-17","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of ITU-T Recommendation Q.9?","Question",{"text":112,"@type":113},"It provides a vocabulary of switching and signalling terms along with studied definitions for application in telecommunications documentation.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How are terms arranged within the recommendation?",{"text":117,"@type":113},"Terms are grouped into sections by area of concepts, assembling related terms within each section to support overview.",{"name":119,"@type":110,"acceptedAnswer":120},"What conventions are used for qualifiers, regional usage, and deprecated terms?",{"text":121,"@type":113},"Round brackets indicate qualifiers or alternative terms; square brackets denote deprecated terms; and (USA) and (UK) indicate different usage by region, with numbers showing multiple definitions.","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},427978,1791384996,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"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},2336475104736,"https://ap-avatar.wpscdn.com/avatar/22000c4c5e0e5b17e70?x-image-process=image/resize,m_fixed,w_180,h_180&k=1786591360781797222","INTERNATIONAL TELECOMMUNICATION UNION  \n)45􀀍4 1􀀎􀀙  \nTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU  \n'%.%2!, 2%\\#/--%.$!4)/.3 /. 4%,%0(/.%  \n37)4\\#().' !.$ 3)'.!,,).'  \n).4%2.!4)/.!, !54/-!4)\\# !.$ 3%-)􀀍!54/-!4)\\# 7/2+).'  \n6/\\#!\"5,!29 /& 37)4\\#().' !.$ 3)'.!,,).' 4%2-3  \n)45􀀍4 Recommendation 1􀀎􀀙  \n(Extract from the \"LUE \"OOK)  \nNOTES  \n1 ITU-T Recommendation Q.9 was published in Fascicle VI.1 of the Blue Book. This file is an extract from the Blue Book. While the presentation and layout of the text might be slightly different from the Blue Book version, the contents ofthe file are identical to the Blue Book version and copyright conditions remain unchanged (see below) .  \n2 In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency.  \n􀃣 ITU 1988, 1993  \nAll rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU.  \nRecommendation Q.9  \nVOCABULARY OF SWITCHING AND SIGNALLING TERMS  \n(Geneva, 1980; modified at Malaga-Torremolinos, 1984; Melbourne 1988)  \n1 This Recommendation provides a vocabulary of terms and definitions which have been studied for application in documentation on switching and signalling. The possible evolution toward integrated digital networksand integrated services digital networks has been taken into account.  \n2 The terms are grouped in sections and within each section terms belonging to the same area of concepts are assembled. While such grouping in logical order may ease overview, it was not established according to firm principles and arbitrary placing of certain terms was accepted.  \n3 Part of the terms and definitions in this Recommendation also are contained in specialized glossaries which are attached to certain Recommendations of the G, Q and Z Series. Care has been taken then that identical texts appear in both the Recommendation and the glossary.  \nCONTENTS  \n0 - General terms (basic terms and terms common to several of the areas covered by the following sections)  \n1 - Switching functions and techniques  \n2 - Signalling functions and techniques  \n3 - Control functions  \n4 - Interfaces and interface functions (machine-machine)  \n5 - Equipment and hardware  \n6 - Executive software  \n7 - Functions for basic and supplementary services  \n8 - Mobile station networks  \n9 - Telephone subscriber’s equipment and local lines  \nAnnex A-Alphabetical list of terms defined in this Recommendation.  \nAccording to the conventions applied in the lists, indications in round brackets are qualifiers or alternative terms in general use in addition to the principal term.  \nExamples: call (in software)  \nexchange (switching exchange, switching centre)  \nTerms in square brackets are deprecated.  \nThe indication (USA) after a term in English means that the term is used in the United States, and is different from that current in the United Kingdom. The indication (UK) means the reverse.  \nA number (1) or (2) after a term indicates that more than one definition is given (when the term acquires another meaning depending on the context) .  \nFascicle VI.1-Rec. Q.9 1  \nCross-references to the sources in §§ 1 to 9 are given, where of interest, at the right-hand side of the line following the end of a definition.  \nSources quoted are ISO, Recommendation G.701 [1] and Recommendation I.112 [7], List of Essential Telecommunication Terms [2], the International Electrotechnical Vocabulary (IEV), Recommendations E.100 and E.600 [3] . The name of ISO and Recommendations are mentioned along with a number; the terms derived from the\"List of Essential Telecommunications Terms\" give only a four digit number. The four digit number from E Recommendations [3] is preceded by the designation \"Study Group II\". Numbers beginning with 714 refer to Chapter 714 (Switching), those with 716 to","cbCaicIrD6RGInUK","https://ap.wps.com/l/cbCaicIrD6RGInUK","pdf",317445,92,"English","# Contents\n## 0 - General terms (basic terms and terms common to several areas)\n## 1 - Switching functions and techniques\n## 2 - Signalling functions and techniques\n## 3 - Control functions\n## 4 - Interfaces and interface functions (machine-machine)\n## 5 - Equipment and hardware\n## 6 - Executive software\n## 7 - Functions for basic and supplementary services\n## 8 - Mobile station networks\n## 9 - Telephone subscriber’s equipment and local lines\n## Annex A - Alphabetical list of terms defined","[{\"question\":\"What is the purpose of ITU-T Recommendation Q.9?\",\"answer\":\"It provides a vocabulary of switching and signalling terms along with studied definitions for application in telecommunications documentation.\"},{\"question\":\"How are terms arranged within the recommendation?\",\"answer\":\"Terms are grouped into sections by area of concepts, assembling related terms within each section to support overview.\"},{\"question\":\"What conventions are used for qualifiers, regional usage, and deprecated terms?\",\"answer\":\"Round brackets indicate qualifiers or alternative terms; square brackets denote deprecated terms; and (USA) and (UK) indicate different usage by region, with numbers showing multiple definitions.\"}]","VOCABULARY OF SWITCHING AND SIGNALLING TERMS - Recommendation Q.9 - Vocabulary | PDF",1790645333,232]