1、 ETSI TS 101 563 V1.4.1 (2015-10) Speech and multimedia Transmission Quality (STQ); IMS/PES/VoLTE exchange performance requirements TECHNICAL SPECIFICATION ETSI ETSI TS 101 563 V1.4.1 (2015-10)2 Reference RTS/STQ-246 Keywords IMS, performance, QoS, VoLTE ETSI 650 Route des Lucioles F-06921 Sophia An
2、tipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present
3、 document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions
4、 and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the curre
5、nt status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be r
6、eproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restri
7、ction extend to reproduction in all media. European Telecommunications Standards Institute 2015. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of i
8、ts Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 101 563 V1.4.1 (2015-10)3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g3Introduction 4g31 Scope 5g32 References 5g32.
9、1 Normative references . 5g32.2 Informative references 5g33 Abbreviations . 6g34 Reference loads and parameter requirements . 6g34.1 ISDN/PSTN reference loads definitions . 6g34.2 IMS and LTE reference loads definitions . 7g34.3 Parameter requirements 7g34.4 Call processing performance objectives .
10、25g34.4.1 Premature release 25g34.4.2 Release failure 25g34.4.3 Incorrect charging or accounting 25g34.4.4 Misrouting. 25g34.4.5 No tone . 25g34.4.6 Other failures 25g34.5 Transmission performance . 25g34.5.1 64 kbit/s switched connections . 25g34.6 Slip rate 25g34.6.1 Normal conditions 25g34.6.2 Te
11、mporary loss of timing control . 26g34.6.3 Abnormal conditions at the exchange input 26g3Annex A (informative): Bibliography . 27g3History 28g3ETSI ETSI TS 101 563 V1.4.1 (2015-10)4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to
12、 ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is ava
13、ilable from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 0
14、00 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Speech and multimedia Transmission Quality (STQ). Modal verbs terminology In the present doc
15、ument “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except
16、 when used in direct citation. Introduction As a general principle, ITU-T SG12 Q11/12 has the opinion that PSTN/ISDN emulation based on IMS architecture (or any other for that matter) should strive to be transparent to the end-user. Following this principle, the definitions of IMS/PES/VoLTE design o
17、bjectives should be based on “best practice“ performance of legacy PSTN/ISDN signalling. The values contained in the present document are “best practice“ performance values measured on IMS and NGN implementations. ETSI ETSI TS 101 563 V1.4.1 (2015-10)5 1 Scope The present document contains design re
18、quirements applicable to IMS/PES/VoLTE exchange implementations based on Recommendation ITU-T Q.543 1. The definitions of IMS/PES/VoLTE design objectives are based on “best practice“ performance of legacy PSTN/ISDN signalling. The values contained in the present document are “best practice“ performa
19、nce values measured on IMS and NGN implementations. The ISDN VGW values are based on carrier grade implementations. The handling of preconditions is out of the scope of the present document. 2 References 2.1 Normative references References are either specific (identified by date of publication and/o
20、r edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expecte
21、d location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 Reco
22、mmendation ITU-T Q.543: “Digital exchange performance design objectives“. 2 ETSI TS 183 036: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); ISDN/SIP interworking; Protocol specification“. 3 ETSI TS 124 229: “Digital cellular telecommunications sys
23、tem (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 (3GPP TS 24.229)“. 4 ETSI TS 183 043: “Telecommunications and Internet converged Services and Protoco
24、ls for Advanced Networking (TISPAN); IMS-based PSTN/ISDN Emulation; Stage 3 specification“. 5 Recommendation ITU-T Q.541 (1993): “Digital exchange design objectives - General“. 6 Recommendation ITU-T G.812 (2004): “Timing requirements of slave clocks suitable for use as node clocks in synchronizatio
25、n networks“. 7 Recommendation ITU-T G.823: “The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy“. 8 Recommendation ITU-T G.826 (12/2002): “End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and c
26、onnections“. 9 ETSI TS 102 928: “Speech and multimedia Transmission Quality (STQ); End-to-End Transmission Planning Requirements for Real Time Services in an NGN context“. 10 ETSI TS 102 250-2 (V2.4.1): “Speech and multimedia Transmission Quality (STQ); QoS aspects for popular services in mobile net
27、works; Part 2: Definition of Quality of Service parameters and their computation“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-s
28、pecific references, the latest version of the reference document (including any amendments) applies. ETSI ETSI TS 101 563 V1.4.1 (2015-10)6 NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenc
29、ed documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. Not applicable. 3 Abbreviations For the purposes of the present document, the following abbreviations apply: AGCF Access Gateway Control Function CSCF Call Se
30、ssion Control Function ECM EPS Connection Management GW GateWay IAD Integrated Access Device IMS IP Multimedia Subsystem ISDN Integrated Service Digital Network ITU-T ITU Telecommunication Standardization Sector MGW Media Gateway MME Mobility Management Entity MSAN Multi Service Access Node NGN New
31、Generation Network P-CSCF Proxy Call Server Control Function PES PSTN/ISDN Emulation SubsystemQCI QoS Class Identifier RTP Real Time Protocol SBC Session Border Control SC Sending Complete SDP Session Description Protocol S-GW Signaling Gateway SIP Session Initiation Protocol TIE Time Interval Error
32、 UE User Equipment VGW Voice GateWayVoLTE Voice over LTE 4 Reference loads and parameter requirements 4.1 ISDN/PSTN reference loads definitions The ISDN/PSTN reference loads definitions and values described in table 1 to table 9 are the reference loads definitions described in Recommendation ITU-T Q
33、.543 1. The derived ISDN procedures are based on the ISDN/SIP interworking 2 procedures, the derived PES procedures are based on the IMS/PES Emulation specification 4 and the derived SIP procedures are based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP) 3. ETSI ETSI TS
34、101 563 V1.4.1 (2015-10)7 4.2 IMS and LTE reference loads definitions Figure 1: IMS/LTE Basic Configuration MGCSIPUAMGF MGFVGWAGCFRTPFMSIPUAFMMGCS-CSCF S-CSCFAS ASP-CSCFFigure 2: AGCF/VGW session processing models 4.3 Parameter requirements IMS systems shall comply with the requirements given in tab
35、les 1 to 9. ETSI ETSI TS 101 563 V1.4.1 (2015-10)8 Table 1 Meaning of timers Parameter ITU-T Q.543 1 IMS, PES equivalent Reference Load A Reference Load B Detailed description Mean Value 95 % probability of not exceeding Mean Value 95 % probability of not exceeding Local exchange call request delay
36、- originating outgoing and internal traffic connections ANALOGUE SUBSCRIBER LINES Local exchange call request delay - originating outgoing and internal traffic connections. clause 2.3.2.1 of ITU-T Q.543 1 For ANALOGUE SUBSCRIBER LINES, call request delay is defined as the interval from the instant w
37、hen the off-hook condition is recognizable at the subscriber line interface of the exchange until the exchange begins to apply dial tone to the line. The call request delay interval is assumed to correspond to the period at the beginning of a call attempt during which the exchange is unable to recei
38、ve any call address information from the subscriber. PES 4 For ANALOGUE SUBSCRIBER LINES connected to the AGCF/MSAN. Call request delay is defined as the interval from the instant when the off-hook condition is recognizable at the subscriber line interface of the AGCF/MSAN until the AGCF/MSAN begins
39、 to apply dial tone to the line. 400 ms 600 ms 800 ms 1 000 ms ANALOGUE SUBSCRIBER with IAD (VGW) Local exchange call request delay - originating outgoing and internal traffic connections. PES 4 For ANALOGUE SUBSCRIBER LINES connected to the VGW. Call request delay is defined as the interval from th
40、e instant when the off-hook condition is recognizable at the subscriber line interface of the VGW until the VGW begins to apply dial tone to the line. 400 ms 600 ms 800 ms 1 000 ms ETSI ETSI TS 101 563 V1.4.1 (2015-10)9 Figure 3: Local exchange analogue subscriber call request delay: overlap sending
41、 Table 2 Meaning of timers Parameter ITU-T Q.543 1 IMS, PES equivalent Reference Load A Reference Load B Detailed description Mean Value 95 % probability of not exceeding Mean Value 95 % probability of not exceeding Local exchange ISDN subscriber call request delay: overlap sending ISDN SUBSCRIBER L
42、INES Local exchange call request delay - Overlap sending. clause 2.3.2.2 of ITU-T Q.543 1 Local exchange call request delay. Call request delay is defined as the interval from the instant at which the SETUP message has been received from the subscriber signalling system until the SETUP ACKNOWLEDGE m
43、essage is passed back to the subscriber signalling system. ISDN 2 Call request delay is defined as the interval from the instant at which the SETUP message has been received from the subscriber signalling system until the SETUP ACKNOWLEDGE message is passed back to the subscriber signalling system.
44、200 ms 250 ms 300 ms 400 ms IMS SUBSCRIBER Local exchange call request delay. IMS 3 Call request delay is defined as the interval from the instant at which the INVITE message has been received from the SIP subscriber until the 100 Trying from the SBC/P-CSCF is passed back to the subscriber. 15 ms 20
45、 ms 30 ms 40 ms ETSI ETSI TS 101 563 V1.4.1 (2015-10)10 OLE AGCF/VGWISDN line ISDN lineSETUPSETUP ACKSETUPSETUP ACKSBC/P-CSCFSIP lineINVITE100 TryingQ.543IMS Figure 4: Local exchange ISDN subscriber call request delay: overlap sending ETSI ETSI TS 101 563 V1.4.1 (2015-10)11 Table 3 Meaning of timers
46、 Parameter ITU-T Q.543 1 IMS, PES equivalent Reference Load A Reference Load B Detailed description Mean Value 95 % probability of not exceeding Mean Value 95 % probability of not exceeding Local exchange ISDN subscriber call request delay: en Block sending ISDN SUBSCRIBER LINES Local exchange call
47、request delay en - block sending. clause 2.3.2.3 of ITU-T Q.543 1 For DIGITAL SUBSCRIBER LINES using en-bloc sending, call request delay is defined as the interval from the instant at which the SETUP message is received from the subscriber signalling system until the call proceeding message is passe
48、d back to the subscriber signalling system. ISDN 2 For ISDN using en-bloc sending, call request delay is defined as the interval from the instant at which the SETUP message is received from the subscriber signalling system until the CALL PROCCEDING message is passed back to the subscriber signalling
49、 system. 300 ms 400 ms 500 ms 600 ms Figure 5: Local exchange ISDN subscriber call request delay: en Block sending ETSI ETSI TS 101 563 V1.4.1 (2015-10)12 Table 4 Meaning of timers Parameter ITU-T Q.543 1 IMS, PES equivalent Reference Load A Reference Load B Detailed description Mean Value 95 % probability of not exceeding Mean Value 95 % probability of not exceeding Alerting sending delay for terminating traffic (the users are in different locations, controlled by different S-CSCF/P
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