1、 Reference numberISO/IEC 23916:2005(E)ISO/IEC 2005 INTERNATIONAL STANDARD ISO/IEC23916First edition2005-11-01 Information technology Telecommunications and information exchange between systems Corporate Telecommunication Networks Signalling Interworking between QSIG and SIP Call Transfer Technologie
2、s de linformation Tlcommunications et change dinformation entre systmes Rseaux de tlcommunications dentreprise Interaction de signalisation entre QSIG et SIP Transfert dappel ISO/IEC 23916:2005(E)PDF disclaimer This PDF file may contain embedded typefaces.In accordance with Adobes licensing policy,t
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7、7 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2005 All rights reserved ISO/IEC 23916:2005(E)ISO/IEC 2005 All rights reserved iii ContentsPageForeword.vIntroduction.vi1 Scope.12 Normative references.13 Terminology.24 Definitions.34.1 External definitions.34.2 Other def
8、initions.34.2.1 User A.34.2.2 User B.34.2.3 User C.34.2.4 Call transfer.34.2.5 Single step call transfer.44.2.6 Call transfer by join.44.2.7 Call transfer by rerouteing.44.2.8 Corporate telecommunication Network(CN).44.2.9 IP network.44.2.10 Private Integrated Services Network(PISN).44.2.11 Private
9、Integrated services Network eXchange(PINX).45 Abbreviations and acronyms.46 Background and architecture.57 Procedures.57.1 Call transfers in QSIG.57.2 Call transfer in SIP.67.3 Scope of the interworking functions.67.3.1 QSIG side.67.3.2 SIP side.67.3.3 Discussion over transfer interworking functions
10、.67.4 Mapping of numbers and URIs.97.5 UAC Processing.107.5.1 Receipt of a FACILITY message with callTransferComplete invoke APDU.107.5.2 Receipt of a FACILITY message with callTransferUpdate invoke APDU.107.5.3 Receipt of a FACILITY message with ssctInitiate invoke APDU.107.5.4 Receipt of a SETUP m
11、essage with ssctSetup invoke APDU.117.5.5 Receipt of a FACILITY message with subaddressTransfer invoke APDU.127.6 UAS Processing.127.6.1 Receipt of a SIP REFER request.127.6.2 Receipt of a SIP INVITE request.177.6.3 Receipt of a SIP request with revised identity.188 Example message sequences.198.1 C
12、all transfer by join where User B and C are SIP participants.198.2 Call transfer where User A is a SIP participant.208.3 Call transfer where User A is a SIP participant and where two gateways are used.218.4 Call transfer where User A and User B are SIP participants.228.5 Single step call transfer wh
13、ere User B is a SIP participant.238.6 Unsuccessful Single step call transfer where User A and User C are SIP participants.248.7 Single step call transfer where User A and User B are SIP participants.259 Security considerations.25ISO/IEC 23916:2005(E)iv ISO/IEC 2005 All rights reserved Foreword ISO(t
14、he International Organization for Standardization)and IEC(the International Electrotechnical Commission)form the specialized system for worldwide standardization.National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees esta
15、blished by the respective organization to deal with particular fields of technical activity.ISO and IEC technical committees collaborate in fields of mutual interest.Other international organizations,governmental and non-governmental,in liaison with ISO and IEC,also take part in the work.In the fiel
16、d of information technology,ISO and IEC have established a joint technical committee,ISO/IEC JTC 1.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives,Part 2.The main task of the joint technical committee is to prepare International Standards.Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting.Publication as an International Standard requires approval by at least 75%of the national bodies