Interworking between the Session Initiation Protocol (SIP) and QSIG
RFC 4497
Document | Type |
RFC - Best Current Practice
(May 2006; No errata)
Also known as BCP 117
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Authors | Olivier Rousseau , Patrick Mourot , John Elwell , Frank Derks | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 4497 (Best Current Practice) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Allison Mankin | ||
Send notices to | rohan@ekabal.com, dean.willis@softarmor.com |
Network Working Group J. Elwell Request for Comments: 4497 Siemens BCP: 117 F. Derks Category: Best Current Practice NEC Philips P. Mourot O. Rousseau Alcatel May 2006 Interworking between the Session Initiation Protocol (SIP) and QSIG Status of This Memo This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2006). Abstract This document specifies interworking between the Session Initiation Protocol (SIP) and QSIG within corporate telecommunication networks (also known as enterprise networks). SIP is an Internet application-layer control (signalling) protocol for creating, modifying, and terminating sessions with one or more participants. These sessions include, in particular, telephone calls. QSIG is a signalling protocol for creating, modifying, and terminating circuit-switched calls (in particular, telephone calls) within Private Integrated Services Networks (PISNs). QSIG is specified in a number of Ecma Standards and published also as ISO/IEC standards. Elwell, et al. Best Current Practice [Page 1] RFC 4497 Interworking between SIP and QSIG May 2006 Table of Contents 1. Introduction ....................................................4 2. Terminology .....................................................5 3. Definitions .....................................................5 3.1. External Definitions .......................................5 3.2. Other definitions ..........................................5 3.2.1. Corporate Telecommunication Network (CN) ............5 3.2.2. Gateway .............................................6 3.2.3. IP Network ..........................................6 3.2.4. Media Stream ........................................6 3.2.5. Private Integrated Services Network (PISN) ..........6 3.2.6. Private Integrated Services Network Exchange (PINX) ..............................................6 4. Acronyms ........................................................6 5. Background and Architecture .....................................7 6. Overview .......................................................10 7. General Requirements ...........................................11 8. Message Mapping Requirements ...................................12 8.1. Message Validation and Handling of Protocol Errors ........12 8.2. Call Establishment from QSIG to SIP .......................14 8.2.1. Call Establishment from QSIG to SIP Using En Bloc Procedures .................................14 8.2.2. Call Establishment from QSIG to SIP Using Overlap Procedures .................................16 8.3. Call Establishment from SIP to QSIG .......................20 8.3.1. Receipt of SIP INVITE Request for a New Call .......20 8.3.2. Receipt of QSIG CALL PROCEEDING Message ............21 8.3.3. Receipt of QSIG PROGRESS Message ...................22 8.3.4. Receipt of QSIG ALERTING Message ...................22 8.3.5. Inclusion of SDP Information in a SIP 18x Provisional Response ...............................23 8.3.6. Receipt of QSIG CONNECT Message ....................24 8.3.7. Receipt of SIP PRACK Request .......................25 8.3.8. Receipt of SIP ACK Request .........................25 8.3.9. Receipt of a SIP INVITE Request for a Call Already Being ......................................25 8.4. Call Clearing and Call Failure ............................26 8.4.1. Receipt of a QSIG DISCONNECT, RELEASE, or RELEASE COMPLETE ...................................26 8.4.2. Receipt of a SIP BYE Request .......................29 8.4.3. Receipt of a SIP CANCEL Request ....................29 8.4.4. Receipt of a SIP 4xx-6xx Response to an INVITE Request .....................................29 8.4.5. Gateway-Initiated Call Clearing ....................32 8.5. Request to Change Media Characteristics ...................32 Elwell, et al. Best Current Practice [Page 2]Show full document text