1、 ETSI EN 300 008-1 V1.3.2 (2003-06)European Standard (Telecommunications series) Integrated Services Digital Network (ISDN);Signalling System No.7;Message Transfer Part (MTP)to support international interconnection;Part 1: Protocol specificationITU-T Recommendations Q.701, Q.702, Q.703, Q.704,Q.705,
2、 Q.706, Q.707 and Q.708 modifiedETSI ETSI EN 300 008-1 V1.3.2 (2003-06) 2 Reference REN/SPAN-130330 Keywords ISDN, MTP, SS7 ETSI 650 Route des Lucioles F-06921 Sophia Antipolis 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 luc
3、ratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived differenc
4、e in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that t
5、he document may be subject to revision or change of status. Information on the current 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, send your comment to: editoretsi.org Copyright Notification No part ma
6、y be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2003. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of
7、 its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI EN 300 008-1 V1.3.2 (2003-06) 3 Contents Intellectu
8、al Property Rights4 Foreword.4 Endorsement notice 4 1 Scope 4 2 References 5 3 Abbreviations .5 4 Modifications to ITU-T Recommendations Q.701 to Q.7086 4.1 National options .6 4.2 Signalling data links .6 4.3 Network Indicator.6 5 Modifications to ITU-T Recommendation Q.7016 6 Modifications to ITU-
9、T Recommendation Q.7036 7 Modifications to ITU-T Recommendation Q.7047 7.1 Signalling link management.7 7.2 Subclause 14.2.1.7 7.3 Table 1/Q.704.7 7.4 Subclause 15.17.4.7 7.5 SDL changes 7 8 Modifications to ITU-T Recommendation Q.7057 9 Modifications to ITU-T Recommendation Q.7067 Annex ZA (normati
10、ve): Specific requirements 8 ZA.1 Signalling link loading .8 ZA.1.1 Basic definition 8 ZA.1.2 Maximum signalling link load during normal operation8 ZA.1.3 Minimum signalling link load handling capability.8 ZA.1.4 Message length influence .9 ZA.1.5 Graphic representation .9 Bibliography.10 History 11
11、 ETSI ETSI EN 300 008-1 V1.3.2 (2003-06) 4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
12、 in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the
13、 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 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Fore
14、word This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Services and Protocols for Advanced Networks (SPAN). The present document is part 1 of a multi-part deliverable covering the Integrated Services Digital Network (ISDN); Signalling System No.7; Messa
15、ge Transfer Part (MTP) to support international interconnection, as identified: Part 1: “Protocol specification ITU-T Recommendations Q.701, Q.702, Q.703, Q.704, Q.705, Q.706, Q.707 and Q.708 modified“; Part 2: “Protocol Implementation Conformance Statement (PICS) proforma specification“. The presen
16、t document also incorporates agreements made at ITU-T since the last formal issue of the Q.70x Recommendations. National transposition dates Date of latest announcement of this EN (doa): 30 September 2003 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 March
17、 2004 Date of withdrawal of any conflicting National Standard (dow): 31 March 2004 Endorsement notice The elements of ITU-T Recommendations Q.701 1 , Q.702 2 , Q.703 3 , Q.704 4 , Q.705 5 , Q.706 6 , Q.707 7 and Q.708 8 apply, with the following modifications: Insert the following clauses 1, 2 and 3
18、: 1 Scope The present document defines the Message Transfer Part (MTP) protocol of Signalling System No.7 for application in the international network and, optionally, in public networks. The present document is applicable to the international network and is not meant to restrict national networks.
19、ETSI ETSI EN 300 008-1 V1.3.2 (2003-06) 5 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication and/or edition number or version number) or non-sp
20、ecific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. 1 ITU-T Recommendation Q.701 (1
21、993): “Functional description of the message transfer part (MTP) of Signalling System No. 7“. 2 ITU-T Recommendation Q.702 (1998): “Signalling data link“. 3 ITU-T Recommendation Q.703 (1996): “Signalling link“. 4 ITU-T Recommendation Q.704 (1996): “Signalling network functions and messages“. 5 ITU-T
22、 Recommendation Q.705 (1993): “Signalling network structure“. 6 ITU-T Recommendation Q.706 (1993): “Message transfer part signalling performance“. 7 ITU-T Recommendation Q.707 (1998): “Testing and maintenance“. 8 ITU-T Recommendation Q.708 (1998): “Assignment procedures for international signalling
23、point codes“. 9 ITU-T Recommendation E.733: “Methods for dimensioning resources in Signalling System No. 7 networks“. 10 ITU-T Recommendation Q.2210: “Message transfer Part level 3 Functions and Messages“. 11 ETSI EG 201 693: “Integrated Services Digital Network (ISDN); Integrated Services Digital N
24、etwork (ISDN); Master list of codepoints“. 3 Abbreviations For the purposes of the present document, the following abbreviations apply: ISDN Integrated Services Digital Network LSSU Link Status Signal Unit MSU Message Signal Unit MTP Message Transfer Part SIF Signalling Information Field SIO Service
25、 Information Octet SP Signalling Point TRA Traffic Restart Allowed message ETSI ETSI EN 300 008-1 V1.3.2 (2003-06) 6 4 Modifications to ITU-T Recommendations Q.701 to Q.708 The elements of ITU-T Recommendations Q.701 1 to Q.708 8 apply with the following exceptions and modifications. 4.1 National op
26、tions No national options, or remarks with regard to national options, shall apply to the present document. 4.2 Signalling data links A standard bit rate of 64 kbit/s on signalling data links shall apply. If signalling data links are to be provided over an analogue transmission path, any necessary d
27、igital to analogue or analogue to digital conversion shall be on the multiplexed transmission link after interface point C, as defined in figure 2 of ITU-T Recommendation Q.702 2 . 4.3 Network Indicator Only the value 00 shall be used for the Network Indicator. 5 Modifications to ITU-T Recommendatio
28、n Q.701 Subclause 8.5 Modify the text as follows: When the MTP restart procedure is terminated (i.e. when the TRA messages have been broadcast), the MTP indicates the end of MTP restart to all local MTP Users showing each signalling points accessibility or inaccessibility. The means of doing this is
29、 implementation dependent (see 9/Q.704 4). 6 Modifications to ITU-T Recommendation Q.703 i) Timer values The timer values included in ITU-T Recommendation Q.703 3 shall apply with the following exceptions: T1 (4,8 kbit/s), T2 low, T2 high, T4n (4,8 kbit/s), T4e (4,8 kbit/s), T6 (4,8 kbit/s) and T7 (
30、4,8 kbit/s) shall not apply for the present document. ii) subclause 1.4.1 - changes to error correction method selection criteria, and reference to E.733 9, as follows: “a) the Basic method applies for signalling links for which the one way propagation delay is up to 30ms (loop propagation delay up
31、to 60 ms); b) the PCR method applies for signalling links for which the one way propagation delay is greater than or equal to 125ms and for all signalling links established via satellite; c) for one way propagation delays between 30 ms and 125 ms additional criteria need to be considered. NOTE: Addi
32、tional information and guidelines are provided in ITU-T Recommendation E.733 9 (7.1.3- “Choosing between basic and PCR error correction“)“. ETSI ETSI EN 300 008-1 V1.3.2 (2003-06) 7 iii) SDL - changes that were previously agreed but were not published in Q.703 3 (07/96). The affected SDLs are figure
33、 8 (sheet 6), figure 13 (sheet 3), figure 13 (sheet 5), figure 16 (sheet 3), all previously agreed changes. Also figure 15 (sheet 6) to be changed with respect to decision FSNF=Z=FSNL from FSNFZFSNL and check for empty retransmission buffer. For details refer to Implementors guide Q.703 (1999) (avai
34、lable at http:/www.itu.int/itudoc/itu-t/com11/implgd/index.html) for ITU-T Recommendation Q.703 3. 7 Modifications to ITU-T Recommendation Q.704 Timer values The timer values included in ITU-T Recommendation Q.704 4 shall apply with the following exceptions: T7, T11, T15, T16 and T24 shall not apply
35、 for the present document. 7.1 Signalling link management Of the requirements in ITU-T Recommendation Q.704 4, only the basic signalling link management functions of subclause 12.2 shall apply, while subclauses 12.3 to 12.6 shall not apply. 7.2 Subclause 14.2.1 The SI values recorded in the Master l
36、ist of codepoints 11 apply. 7.3 Table 1/Q.704 H1 Codes 0011 and 0100 for message group CHM (H0 = 0001) are reserved for use according to ITU-T Recommendation Q.2210 10 (MTP-3b). 7.4 Subclause 15.17.4 The user part identity field values within the user part unavailable message recorded in the Master
37、list of codepoints 11 applies. 7.5 SDL changes Editorial errors in ITU-T Recommendation Q.704 4 published versions of sheets 11 and 16 of figure 29 and a publication error which duplicated fig.30 sheets 5 and 6 (i.e. the correct sheet 6 was omitted). For details refer to Implementors guide Q.704 (19
38、99) (available at http:/www.itu.int/itudoc/itu-t/com11/implgd/index.html) for ITU-T Recommendation Q.704 4. 8 Modifications to ITU-T Recommendation Q.705 The screening method given in 8.2 ii) of ITU-T Recommendation Q.705 5 shall not apply. For more information on this the Implementors Guide Q.705 (
39、1997) (available at http:/www.itu.int/itudoc/itu-t/com11/implgd/index.html) for ITU-T Recommendation Q.705 5 should be consulted. 9 Modifications to ITU-T Recommendation Q.706 There are no changes to Q.706 6 normative material. However it should be noted that changes to informative material on queui
40、ng delay calculations are currently being developed within ITU-T SG11. For more information on this the Implementors Guide Q.706 (1999) (available at http:/www.itu.int/itudoc/itu-t/com11/implgd/index.html) for ITU-T Recommendation Q.706 6 should be consulted. ETSI ETSI EN 300 008-1 V1.3.2 (2003-06)
41、8 Annex ZA (normative): Specific requirements ZA.1 Signalling link loading Subclauses ZA.1.1 to ZA.1.5 detail the requirements for signalling link loading that shall apply. ZA.1.1 Basic definition signalling link load: The signalling link load is defined as the ratio of the number of MSU bits transf
42、erred per second on one link at level 2, measured in one direction, including the necessary level 2 fields but excluding retransmitted MSUs as well as FISUs and Link Status Signal Units (LSSUs), to the bit rate at level 2. The signalling link load is a value for the occupancy of a signalling link, d
43、uring the period of observation. ZA.1.2 Maximum signalling link load during normal operation The maximum signalling link load is a value of the signalling link load during normal operation of the signalling link, which is specified for the purpose of signalling network dimensioning and planning. Nor
44、mal operation of the signalling link means that there is no changeover or re-routeing in the signalling network which has any impact on the signalling link under consideration. The maximum signalling link load is the maximum value of the signalling link load which is transferred via a signalling lin
45、k at normal operation, as an average value (over a long period of time) during the period of maximum signalling traffic (e.g. busy hour), and for which the signalling link should be able to transfer this load in compliance with the transfer time requirements. The maximum signalling load should not e
46、xceed 0,2 Erlang in the European signalling network for interconnections, but the actual signalling link load can be much higher or much lower during short periods of time and may, in general, be lower outside the period of maximum signalling traffic. ZA.1.3 Minimum signalling link load handling cap
47、ability The minimum signalling link load handling capability shall be specified as a minimum requirement in order to support the design of equipment and the planning of the signalling routeing during periods of abnormal conditions in the signalling network. The minimum signalling link load handling
48、capability shall be that value of the signalling link load which the equipment shall be able to handle as a minimum during abnormal conditions in the signalling network. This load shall be seen during network dimensioning as the maximum value of signalling link load to be carried by one signalling l
49、ink during periods of abnormal conditions, with the guarantee of not being in conflict with the appropriate transfer time requirements (see ITU-T Recommendation Q.706 6) and not triggering any congestion control measures in this section of the signalling network. For the present document the value of 0,4 erlang is agreed in the European signalling network for the minimum signalling link load handling capacity. As a long term objective the value of 0,6 erlang for the minimum sig
