SIST EN 300 008-1 V1.3.2:2004

• Abstract:

  Title alignment

• Status: Published
• Publication Date: 31-Mar-2004
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2004
• Due Date: 01-Apr-2004
• Completion Date: 01-Apr-2004
• Ref Project: ETSI EN 300 008-1 V1.3.2 (2003-06) - Integrated Services Digital Network (ISDN); Signalling System No.7; Message Transfer Part (MTP) to support international interconnection; 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]

SIST EN 300 008-1 V1.3.2:2004 is a SIST standard based on ETSI EN 300 008-1 V1.3.2. It specifies the Message Transfer Part (MTP) protocol of Signalling System No.7 (SS7) for Integrated Services Digital Network (ISDN) international interconnection, with rules that matter to network engineers, equipment suppliers, and conformance testers.

What does SIST EN 300 008-1 V1.3.2:2004 specify?

SIST EN 300 008-1 V1.3.2:2004 defines the MTP protocol for use in the international network and, optionally, in public networks. It is not intended to restrict national networks.

The document is organized as a short set of clauses that apply modifications to ITU-T Recommendations Q.701 to Q.708, followed by a normative annex with specific signalling link loading requirements.

Annex	What it covers
ZA (normative)	Specific requirements for signalling link loading, including the definition of load, normal-operation maximum, abnormal-condition minimum, message-length influence, and a graphic representation.

What are the key requirements of SIST EN 300 008-1 V1.3.2:2004?

SIST EN 300 008-1 V1.3.2:2004 is a profile of the Q.70x MTP recommendations, so the main task for implementers is to apply the ETSI modifications rather than the base ITU-T text alone.

• No national options apply. Clause 4.1 removes national options and remarks about them. In practice, equipment and network planning for this profile should follow one common set of rules.
• Signalling data links use a 64 kbit/s bit rate. Clause 4.2 also says that if an analogue transmission path is used, any digital-to-analogue or analogue-to-digital conversion is placed on the multiplexed transmission link after interface point C. That matters when designing the transport path and the interface boundaries.
• Only Network Indicator value 00 is used. Clause 4.3 limits the Network Indicator, so signalling implementations should not rely on other values for this profile.
• MTP restart behavior is clarified. Clause 5 says that when restart ends, after the TRA messages have been broadcast, the MTP indicates the end of restart to local MTP Users and shows each signalling point as accessible or inaccessible. This is important for network state handling after recovery.
• Q.703 timer use is narrowed. Clause 6 keeps the Q.703 timer set, but several named timers for 4,8 kbit/s do not apply, and the error correction method selection criteria are updated. The practical effect is that implementers need to check timer behavior against this profile, especially for propagation delay and satellite links.
• Q.704 is also restricted. Clause 7 keeps only the basic signalling link management functions from subclause 12.2, and it says other subclauses in that block do not apply. It also ties SI values and user part identity field values to the Master list of codepoints, and reserves certain H1 codes for ITU-T Recommendation Q.2210.
• Q.705 screening and Q.706 normative text are addressed. Clause 8 says the screening method in Q.705 8.2 ii) does not apply, while clause 9 says there are no changes to Q.706 normative material. That helps readers separate actual requirements from background guidance.
• Annex ZA defines signalling link loading. Annex ZA explains how to calculate link load from MSU bits transferred at level 2, excluding retransmitted MSUs, FISUs and LSSUs. It also distinguishes normal-operation maximum load from minimum handling capability during abnormal conditions, which is the basis for network dimensioning, planning, and performance checks.

What terms does SIST EN 300 008-1 V1.3.2:2004 define?

SIST EN 300 008-1 V1.3.2:2004 uses a small set of abbreviations that are central to the protocol.

• ISDN - Integrated Services Digital Network, the service environment named in the title and scope.
• MTP - Message Transfer Part, the SS7 protocol part defined by this standard.
• LSSU - Link Status Signal Unit, a link-status message excluded from the load calculation in Annex ZA.
• MSU - Message Signal Unit, the main signalling message counted in link load calculations.
• SIF - Signalling Information Field, the information-bearing field used in the link-loading graphic.
• SIO - Service Information Octet, the field paired with SIF in the Annex ZA loading graphic.
• SP - Signalling Point, the network node referenced in restart and accessibility handling.
• TRA - Traffic Restart Allowed message, used in the restart procedure described in clause 5.

Who uses SIST EN 300 008-1 V1.3.2:2004?

SIST EN 300 008-1 V1.3.2:2004 is used by telecommunications equipment vendors, network operators, and test laboratories working with SS7 and ISDN interconnection. It is also relevant to planners and quality teams who need to check restart behavior, timer use, codepoint assignments, and signalling link loading.

What changed in SIST EN 300 008-1 V1.3.2:2004 from the previous edition?

The foreword says this version incorporates agreements made at ITU-T since the last formal issue of the Q.70x Recommendations. The document history shows the earlier ETS 300 008-1 V1.3.1 publication and the later V1.3.2 publication.

Which standards are used with SIST EN 300 008-1 V1.3.2:2004?

The document is built around these referenced or companion texts:

• ITU-T Q.701 to Q.708 - the base MTP recommendations that are modified by this standard.
• ITU-T E.733 - guidance for choosing between basic and PCR error correction.
• ITU-T Q.2210 - provides the MTP-3b context for reserved H1 codes.
• ETSI EG 201 693 - the Master list of codepoints used for SI values and user part identity field values.
• Part 2 of the deliverable - the Protocol Implementation Conformance Statement (PICS) proforma specification that supports conformance work.

What does the SIST EN 300 008-1 V1.3.2:2004 document contain?

SIST EN 300 008-1 V1.3.2:2004 contains targeted modifications to the Q.701 to Q.708 material, not a full rewrite of SS7 MTP. It includes timer and method adjustments, link-management restrictions, codepoint references, and restart behavior. Annex ZA adds a normative loading model with a figure that relates MSU rate to SIF+SIO load across the message-length range. The document also carries a bibliography item for Q.709 and a history section that records the publication path.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Integrated Services Digital Network (ISDN); Signalling System No.7; Message Transfer Part (MTP) to support international interconnection; 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]33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 008-1 Version 1.3.2SIST EN 300 008-1 V1.3.2:2004en01-april-2004SIST EN 300 008-1 V1.3.2:2004SLOVENSKI
STANDARD
ETSI 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
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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 difference 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 the 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: [e-mail] Copyright Notification No part may 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 its Members. TIPHONTM and 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. SIST EN 300 008-1 V1.3.2:2004

ETSI ETSI EN 300 008-1 V1.3.2 (2003-06) 3
Contents Intellectual Property Rights.4 Foreword.4 Endorsement notice.4 1 Scope.4 2 References.5 3 Abbreviations.5 4 Modifications to ITU-T Recommendations Q.701 to Q.708.6 4.1 National options.6 4.2 Signalling data links.6 4.3 Network Indicator.6 5 Modifications to ITU-T Recommendation Q.701.6 6 Modifications to ITU-T Recommendation Q.703.6 7 Modifications to ITU-T Recommendation Q.704.7 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.705.7 9 Modifications to ITU-T Recommendation Q.706.7 Annex ZA (normative): Specific requirements.8 ZA.1 Signalling link loading.8 ZA.1.1 Basic definition.8 ZA.1.2 Maximum signalling link load during normal operation.8 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
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 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 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. Foreword 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; Message 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 present 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 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: 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. SIST EN 300 008-1 V1.3.2:2004

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-specific. • 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 (1993): "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 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 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
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