SIST-V ETSI/EG 201 693 V1.1.3:2005

• Abstract:

  To produce a master list of codepoints used in SS7 (MTP, SCCP, TC as defined in ITU-T and containing ETSI extensions and modifications .

• Status: Published
• Publication Date: 31-Dec-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-Jan-2005
• Due Date: 01-Jan-2005
• Completion Date: 01-Jan-2005
• Ref Project: ETSI EG 201 693 V1.1.2 (1999-07) - Integrated Services Digital Network (ISDN); Signalling System No.7; Master list of codepoints

SIST-V ETSI/EG 201 693 V1.1.3:2005 is the SIST version of the ETSI Guide Integrated Services Digital Network (ISDN); Signalling System No.7; Master list of codepoints. It collects the codepoint assignments used in Signalling System No.7 (SS7) for Message Transfer Part (MTP), Signalling Connection Control Part (SCCP) and Transaction Capability (TC), including ETSI extensions and modifications, so designers and network operators can choose compatible values for interworking.

What does SIST-V ETSI/EG 201 693 V1.1.3:2005 specify?

SIST-V ETSI/EG 201 693 V1.1.3:2005 specifies the known SS7 code allocations that support interworking between ETSI member networks. Clause 1 says it is intended for MTP/SCCP application designers and for network operators configuring those applications.

The document is organized as a code allocation guide. It covers scope, references, definitions and abbreviations, SCCP address code allocations, MTP code allocations, and an informative Annex A on network interconnections.

What are the key requirements of SIST-V ETSI/EG 201 693 V1.1.3:2005?

SCCP address code allocations

Clause 4.1 lists the Sub System Number (SSN) assignments used in SCCP. The table includes values for SCCP management, ISDN user part, OMAP, MAP, HLR, VLR, MSC, EIC, AUC, ISDN supplementary services, INAP, broadband ISDN edge-to-edge, and TC test responder, plus ranges reserved for international, ETSI, and national use. In practice, this is the table you consult when deciding which subsystem number a message should carry.

Clause 4.2 assigns Translation type values, including Unknown, ITCC Service, Generic Numbering Plan, Broad-Band Edge-to-Edge, CCBS Supplementary Service, and an ETSI value for mobile number portability "call related" messages. This field tells SCCP how to interpret the Global Title before routing.

Clause 4.3 maps the Numbering Plan to values such as ISDN/telephony, data, telex, maritime mobile, land mobile, ISDN/mobile, and private network or network-specific numbering. Choosing the correct plan matters because the same digits can mean different things in different numbering systems.

Clause 4.4 defines the Encoding scheme as BCD odd, BCD even, or national specific, with spare and reserved values. This tells implementers how the digits are encoded on the signalling path.

Clause 4.5 defines the Nature of Address Indicator, including subscriber number, national significant number, international number, and UK-specific values. In practice, this indicates how much of the number should be interpreted by the receiving network.

MTP code allocations

Clause 5.1 gives the Service Indicator (SI) allocations for the international signalling network. It covers signalling network management, SCCP, telephone user part, ISUP, MTP testing user part, Broadband ISUP, Satellite ISUP, speech processing network element, and the AAL type 2 signalling bearer converter. Network engineers use this field so the MTP hands each message to the right user part.

Clause 5.2 assigns User Part Identity codes for SCCP, TUP, ISUP, DUP, MTP Testing User Part, Broadband ISDN User Part, Satellite ISDN User Part, Signal Processing Network Element User Part, and the AAL type 2 signalling transport converter. This keeps interworking nodes aligned on which user part a message belongs to.

Interworking guidance

Annex A gives practical notes for SCCP and MTP interconnections. It recommends using the Return Option when applications need error feedback, keeping calling and called party addresses stable along the route, checking whether the called address already belongs to the local network, and avoiding circular routing. In practice, these notes help operators reduce misrouting and handle returned messages predictably.

Annex A also covers point code allocation, signal unit repetition, error correction, routeing, signalling point restart, management messages, screening, and transfer prohibited procedures. These are the operational checks that matter when two networks are interconnected.

What terms does SIST-V ETSI/EG 201 693 V1.1.3:2005 define?

SIST-V ETSI/EG 201 693 V1.1.3:2005 defines a small set of SS7 terms that the code tables use.

• DPC - Destination Point Code: the MTP address field that identifies the destination node for routing.
• GT - Global Title: the address information SCCP translates before it routes a message.
• MTP - Message Transfer Part: the SS7 transport part that carries signal units and handles routing.
• RI - Routing Indicator: the SCCP indicator that tells the network whether to route using the SSN or the GT.
• SI - Service Indicator: the MTP field that identifies which user part should receive the message.
• SSN - Sub System Number: the SCCP number that identifies a subsystem or application such as MAP or ISDN user part.
• UDTS - Unit Data Service: the SCCP return message used when a unit data message cannot be delivered.

Who uses SIST-V ETSI/EG 201 693 V1.1.3:2005?

SIST-V ETSI/EG 201 693 V1.1.3:2005 is used by MTP/SCCP application designers, network operators, and interworking engineers who configure signalling between ETSI member networks. It is also relevant to mobile-network teams and signalling planners who assign SSN, translation type, numbering plan, and service indicator values when setting up gateways, portability handling, and SCCP return-on-error behaviour.

Which standards are used with SIST-V ETSI/EG 201 693 V1.1.3:2005?

Reference	What it contributes
ITU-T Q.713	Base SCCP formats and codes used for address code allocation.
ITU-T Q.715	SCCP user guidance that informs Annex A interworking notes.
ITU-T Q.704, Q.701, Q.703	MTP network functions, point codes, signal units, restart, and transfer prohibited procedures.
ITU-T Q.2210	Context for the AAL type 2 signalling bearer converter entries.
ITU-T E.164, X.121, F.69, E.210, E.211, E.212, E.214	Numbering plans used in the SCCP numbering plan table.
ITU-T E.733	Guidance for selecting MTP error correction methods.
ETSI GSM 03.03, GSM 08.06, GSM 03.66	ETSI-specific allocations for SSN and Translation type.

What does the SIST-V ETSI/EG 201 693 V1.1.3:2005 document contain?

The document contains bit and decimal allocation tables for SCCP and MTP fields, including SSN, Translation type, Numbering Plan, Encoding scheme, Nature of Address Indicator, Service Indicator, and User Part Identity. Annex A adds network interconnection guidance, a figure for SCCP return-on-error routing, and a table of suggested application actions for different return reasons.

These contents are used when designing, configuring, and troubleshooting SS7 interconnects. The document also includes references, definitions, abbreviations, a bibliography, and a history note.

SLOVENSKI STANDARD
01-januar-2005
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VH]QDPNRGLUQLKWRþN
Integrated Services Digital Network (ISDN); Signalling System No.7; Master list of
codepoints
Ta slovenski standard je istoveten z: EG 201 693 Version 1.1.3
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETSI EG 201 693 V1.1.3 (1999-10)
ETSI Guide
Integrated Services Digital Network (ISDN);
Signalling System No.7;
Master list of codepoints
2 ETSI EG 201 693 V1.1.3 (1999-10)
Reference
DEG/SPS-01065 (foc00ie2.PDF)
Keywords
SS7, protocol, SCCP, MTP, interworking
ETSI
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Important notice
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In case of dispute, the reference should be the printing on ETSI printers of the PDF version kept on a specific network
drive within ETSI Secretariat.
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 1999.
All rights reserved.
ETSI
3 ETSI EG 201 693 V1.1.3 (1999-10)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction. 4
1 Scope. 5
2 References. 5
3 Definitions and abbreviations. 6
3.1 Definitions . 6
3.2 Abbreviations. 6
4 SCCP address code allocations. 7
4.1 SSN. 7
4.2 Translation type . 8
4.3 Numbering Plan . 8
4.4 Encoding scheme . 9
4.5 Nature of Address Indicator. 9
5 MTP code allocations . 10
5.1 MTP SI code allocations (for NI=00 (international network) only). 10
5.2 MTP User Part Identity code allocations . 11
Annex A (informative): Network interconnections. 12
A.1 SCCP. 12
A.1.1 Introduction of SCCP to post-Blue-Book . 12
A.1.2 SCCP Return message on error procedure. 12
A.1.2.1 Use of the return option. 13
A.1.2.1.1 Incomplete routeing. 14
A.1.2.1.2 Replicated subsystems . 14
A.1.2.1.3 Changes to calling and called party addresses . 14
A.1.2.1.4 Scope of calling party address . 14
A.1.2.1.5 Calling party addresses in UDTS messages. 14
A.1.2.1.6 Conversion of called party address. 14
A.1.2.1.7 SCCP corrective action for messages returned on error . 15
A.1.3 Checking for called addresses in own node or network . 15
A.1.4 Checking for circular routeing of messages . 15
A.2 MTP . 15
A.2.1 Point Code Allocation. 15
A.2.2 Repetition of Signal Units. 15
A.2.3 Error Correction Procedure. 15
A.2.4 Routeing of Messages . 15
A.2.5 Signalling Point Restart . 16
A.2.6 Management messages. 16
A.2.7 MTP Screening . 16
A.2.8 Transfer Prohibited Procedures . 16
Bibliography. 17
History. 18
ETSI
4 ETSI EG 201 693 V1.1.3 (1999-10)
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 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://www.etsi.org/ipr).
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 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 ETSI Guide (EG) has been produced by ETSI Technical Committee Services and Protocols for Advanced
Networks (SPAN).
Introduction
The tables are intended to record all known assigned addressing codes. Where a particular ETSI member is shown to
have assigned a code or codes this should not be taken to mean that the codes are unavailable for standardization, but to
allow a reasoned choice to be made before assigning codes for new services. In future all newly assigned codes will be
recorded in the present document rather than the relevant ETSI MTP and SCCP specifications. Thus if referenced by
these specifications then the information shall be considered normative.
Some of the SCCP material in the present document is based on ITU-T Recommendation Q.715 [1] which is a very
valuable source of additional information and should be considered as a complement to the present document.
ETSI
5 ETSI EG 201 693 V1.1.3 (1999-10)
1 Scope
The present document is intended for use by designers of MTP/SCCP applications as well as by network operators
configuring those applications to help facilitate MTP/SCCP interconnect between ETSI member networks.
In addition to information of an advisory nature, all known standardized SCCP message address codes and MTP SI
codes are also listed.
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, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, subsequent revisions do apply.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
[1] ITU-T Recommendation Q.715: "Signalling connection control part user guide".
[2] ITU-T Recommendation Q.713: "Signalling Connection Control Part formats and codes".
[3] ETSI GSM 03.03: "Digital cellular telecommunications system (Phase 2+); Numbering, addressing
and identification (GSM 03.03)".
[4] ETSI GSM 08.06: "Digital cellular telecommunications system (Phase 2+); Signalling transport
mechanism specification for the Base Station System - Mobile-services Switching Centre (BSS -
MSC) interface (GSM 08.06 version 5.3.0 Release 1996)".
[5] ETSI GSM 03.66: "Digital cellular telecommunications system (Phase 2+); Support of Mobile
Number Portability (MNP); Stage 2 (GSM 03.66 version 7.1.0 Release 1998)".
[6] ITU-T Recommendation Q.704: "Signalling network functions and messages".
[7] ITU-T Recommendation Q.701: "Functional description of the message transfer part (MTP) of
Signalling System No. 7".
[8] ITU-T Recommendation Q.703: "Signalling link".
[9] ITU-T Recommendation Q.2210: "Message transfer part level 3 functions and messages using the
services of ITU-T Recommendation Q.2140".
[10] ITU-T Recommendation E.210: "Ship station identification for VHF/UHF and maritime mobile-
satellite services".
[11] ITU-T Recommendation E.211: "Selection procedures for VHF/UHF maritime mobile services".
[12] ITU-T Recommendation E.212: "The international identification plan for mobile terminals and
mobile users".
[13] ITU-T Recommendation E.214: "Structure of the land mobile global title for the signalling
connection control part (SCCP)".
[14] ITU-T Recommendation E.733: "Methods for dimensioning resources in Signalling System No. 7
networks".
ETSI
6 ETSI EG 201 693 V1.1.3 (1999-10)
[15] ITU-T Recommendation F.69: "The international telex service – Service and operational
provisions of telex destination codes and telex network identification codes".
[16] ITU-T Recommendation E.164: "The international public telecommunication numbering plan".
[17] ITU-T Recommendation X.121: "International numbering plan for public data networks".
3 Definitions and abbreviations
3.1 Definitions
The definitions of the MTP/SCCP recommendations referenced in clause 2 apply.
3.2 Abbreviations
DPC Destination Point Code
GT Global Ttitle
MTP Message Transfer Part
RI Routing Indicator
SCCP Signalling Connection Control Part
SI Service Indicator
SSN Sub System Number
TC Transaction Capability
UDTS Unit Data Service
UHF Ultra-High Frequency
VHF Very High Frequency
ETSI
7 ETSI EG 201 693 V1.1.3 (1999-10)
4 SCCP address code allocations
In general the rules of ITU-T Recommendation Q.713 [2] should apply to ensure ease of interworking SCCP between
both ETSI and non-ETSI-member networks. Addressing codes not standardized within ITU-T may be exchanged
subject to agreement of all concerned operators. Address codes for the support of services not standardized in ITU-T but
agreed within ETSI are recorded in the present document in a similar way to ITU-T Recommendation Q.713 [2],
annex B, where appropriate.
4.1 SSN
Table 1
Decimal Bits Meaning Assignment
Value 8 7 6 5 4 3 2 1
0 0 0 0 0 0 0 0 0 SSN not known/not used ITU-T
1 0 0 0 0 0 0 0 1 SCCP management ITU-T
2 0 0 0 0 0 0 1 0 reserved for ITU-T-T allocation ITU-T
3 0 0 0 0 0 0 1 1 ISDN user part ITU-T
4 0 0 0 0 0 1 0 0 OMAP ITU-T
5 0 0 0 0 0 1 0 1 MAP (mobile application part) ITU-T
6 0 0 0 0 0 1 1 0 HLR (home location register) ITU-T
7 0 0 0 0 0 1 1 1 VLR (visitor location register) ITU-T
8 0 0 0 0 1 0 0 0 MSC (mobile switching centre) ITU-T

9 0 0 0 0 1 0 0 1 EIC (equipment identifier centre) ITU-T
10 0 0 0 0 1 0 1 0 AUC (authentication centre) ITU-T
11 0 0 0 0 1 0 1 1 ISDN supplementary services ITU-T
12 0 0 0 0 1 1 0 0 INAP ETSI
13 0 0 0 0 1 1 0 1 broadband ISDN edge-to-edge ITU-T
14 0 0 0 0 1 1 1 0 TC test responder ITU-T
15 0 0 0 0 1 1 1 1

to ITU-T
 Reserved for international use
31 0 0 0 1 1 1 1 1

32 0 0 1 0 0 0 0 0 
to

147 1 0 0 1 0 0 1 1
 Reserved for ETSI allocation GSM ETSI GSM 03.03 [3]
148 1 0 0 1 0 1 0 0
                          GSM ETSI GSM 03.03 [3]
149 1 0 0 1 0 1 0 1
Œ                          GSM ETSI GSM 03.03 [3]
150 1 0 0 1 0 1 1 0
                        GSM ETSI GSM 03.03 [3]
151 1 0 0 1 0 1 1 1 
to  Reserved for national network use
ETSI
252 1 1 1 1 1 1 0 0 
253 1 1 1 1 1 1 0 1 O&M(BSS)
ETSI GSM 08.06 [4]
...