IS0/IEC INTERNATIONAL STANDARD 23915 First edition 2005-11-01 Information technology - Telecommunications and information exchange between systems - Corporate Telecommunication Networks Signalling Interworking between QSIG and SIP -Call Diversion Technologies de I'information - Telecommunications etechange d'information entre systemes-Reseaux detelecommunications d'entreprise-InteractiondesignalisationentreQSiGetSiP Deviation d'appel Reference number ISO/IEC 23915:2005(E) IEC ISO @ISO/IEC 2005 IS0/IEC 23915:2005(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In ?ISO/IEC2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, ISO's member body in the country of the requester. ISO copyright office Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org ii ISO/IEC2005-Allrightsreserved IS0/IEC 23915:2005(E) Contents Page Foreword. Introduction vi 1 Scope. 2 Normative references.. 3 Terms and definitions.. 3.1 External definitions... 3.2 Other definitions ... 3.2.1 Call diversion .... 3.2.2 Call forwarding busy (CFB).. 3.2.3 Call forwarding no reply (CFNR) 3.2.4 Call forwarding unconditional (CFU) 3.2.5 Corporate telecommunication Network (CN). 3.2.6 EntityA. 3.2.7 EntityB 3.2.8 EntityC. 3.2.9 Gateway. 3.2.10 IP network 3.2.11 Leg A, 3.2.12 Leg B... 3.2.13 Leg C 3.2.14 Private Integrated Services Network (PISN).. 3.2.15 Private Integrated services Network eXchange (PINX) 3.2.16 Rerouting entity ... 3.2.17 User A 3.2.18 User B 3.2.19 UserC. 4 Abbreviations and acronyms .... 5 Background and architecture for SIP-QSIG interworking 6 Call diversion .. 7 Call diversion in QSIG .. 8 Call diversion in SIP 9 Diversion interworking ... 9.1 Scenarios for diversion interworking .... 9.2 Mapping of numbers, names and URls . 9.3 Derivation of QSIG diversion reasons... 9.3.1 Scenario A1 ... 9.3.2 ScenarioB1 9.3.3 Scenario C2 9.4 Derivation of SIP response codes (scenarios A2 and C1) 9.5 Mapping the QSIG diversion counter 9.6 Privacy considerations.. 10 9.7 Interworking for scenario A1. 9.7.1 Transmitting a SIP INVITE request 9.7.2 Receipt of a SiP 1xx or 2xx response... 9.7.3 Receipt of a SIP 4xx, 5xx or 6xx response. 9.8 Interworking for scenario A2 9.8.1 Receipt of a SIP INVITE request... 2 @ISO/IEC 2005 -All rights reserved ili IS0/IEC23915:2005(E) 9.8.2 Receipt of a QSIG divertingLeglnformation1 invoke APDU .12 9.8.3 Receipt of a QSIG divertingLeglnformation3 invoke APDU 12 9.8.4 Transmitting a SiP response in which History-lnfois allowed. 12 9.9 Interworking for scenario B1..... 13 9.9.1 Receipt of a SIP 3xx response. 9.9.2 Receipt of a QSIG DISCONNECT or FACILITY message containing a callRerouteing return resultAPDU 9.9.3 Receipt of a QSIG FACILITY message containing a callRerouteing return error APDU .... 14 9.9.4 Receipt of a QSIG FACILITY message containing a cfnrDivertedLegFailed invoke APDU .... 14 9.10 InterworkingforscenarioB2.... 15 9.10.1 Receipt of a QSIG FACILITY message containing a CallRerouteing invoke APDU...... 15 9.11 Interworking for scenario C1.... .15 9.11.1 Receipt of a QSIG SETUP message containing a divertingLeglnformation2 invoke APDU. 9.11.2 Transmitting a QSIG CONNECT message.... 9.12 Interworking for scenario c2.... 16 9.12.1 TransmittingaQSiGSETUPmessage. 16 9.12.2 Receipt of a QSIG message