SIST EN 300 093-1 V1.2.4:2005

• Abstract:

  Update references from ETS 300 102-1 and associated I-ETSs to ETS 300 403.

• Status: Published
• Publication Date: 31-Mar-2005
• Withdrawal Date: 30-Sep-2003
• 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-2005
• Due Date: 01-Apr-2005
• Completion Date: 01-Apr-2005
• Ref Project: ETSI EN 300 093-1 V1.2.4 (1998-06) - Integrated Services Digital Network (ISDN); Calling Line Identification Restriction (CLIR) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification

SIST EN 300 093-1 V1.2.4:2005 is the Slovenian adoption of EN 300 093-1 Version 1.2.4. It specifies the stage 3 Digital Subscriber Signalling System No. one (DSS1) protocol for the Integrated Services Digital Network (ISDN) Calling Line Identification Restriction (CLIR) supplementary service, so implementers know how to prevent the caller’s ISDN number and subaddress from being presented to the called user. It applies at the T reference point or coincident S and T reference point, including use via a private ISDN at the T reference point.

What does SIST EN 300 093-1 V1.2.4:2005 specify?

SIST EN 300 093-1 V1.2.4:2005 specifies the stage 3 aspects of CLIR for public ISDN access using DSS1. In practice, that means protocol procedures, switching functions and message coding needed to support the service.

The document is organized into 14 clauses covering scope, references, definitions, descriptions, operational requirements, coding, state definitions, signalling procedures, interworking with private ISDNs, interaction with other networks, interaction with other supplementary services, timer values and SDL diagrams. It also has four informative annexes.

Annex	What it covers
Annex A	Signalling flows
Annex B	Terminal interchangeability between public and private ISDNs
Annex C	Changes with respect to the previous ETS 300 093-1
Annex D	Bibliography

The foreword places this part in a six-part CLIR series: Part 1 is this protocol specification, and Parts 2 to 6 cover conformance statements and test suites for the user and the network.

What are the key requirements of SIST EN 300 093-1 V1.2.4:2005?

The core requirement of SIST EN 300 093-1 V1.2.4:2005 is that CLIR restricts presentation of the calling user’s ISDN number and subaddress to the called user. The service is carried in the basic call signalling, so implementers need to handle it together with ordinary call setup.

• Clause 5 says the originating network provides the destination network with the indication that the calling user’s number and subaddress are not to be presented. In practice, this is the privacy rule the network must carry through call handling.
• Clause 6.2 requires CLIR information to be inserted in the SETUP message as part of the basic call procedures. That is the point where terminals and networks exchange the service request.
• Clause 7 points coding of the calling party number information element to EN 300 403-1. This matters because CLIR depends on the correct use of the basic call numbering field.
• Clause 9.2.1 and 9.3.1 define how the presentation indicator is handled for per-call use and for permanent subscription. In practice, a terminal can request restriction or allowance per call, while the network applies the subscribed default for permanent mode.
• Clause 9.3.1 also says the originating network forwards the presentation indicator with the basic call request. That keeps the restriction status visible to the next network element.
• Clause 10 applies the same procedure set when the service is used through a private ISDN. This gives a common signalling approach across public and private access.
• Clause 11 addresses interaction with non-ISDN networks and allows the originating network, as an option, to suppress identifying information from being forwarded. That matters when the call leaves the ISDN environment.
• Clause 12 routes supplementary service interactions to EN 300 195-1. This prevents implementers from duplicating interaction rules in several places.

What terms does SIST EN 300 093-1 V1.2.4:2005 define?

Integrated Services Digital Network (ISDN) is the network type used for the service definitions and signalling rules in this standard.
Digital Subscriber Signalling System No. one (DSS1) is the signalling system used at the user-network interface.
supplementary service is a service added to a basic telecommunications service, rather than a service on its own.
served user is the ISDN subscriber who has the CLIR restriction on outgoing calls.
called user is the party receiving the call on which CLIR is active.
ISDN number is a number that follows the E.164 numbering plan and structure.
subaddress is the additional addressing information defined by E.164.

Who uses SIST EN 300 093-1 V1.2.4:2005?

Network operators use SIST EN 300 093-1 V1.2.4:2005 to implement CLIR in public ISDN services. Terminal and switching equipment vendors use it to make sure their products set and interpret the calling party number information element correctly.

Test laboratories use it together with the later parts of the series to check conformance. Engineers working on public ISDN, private ISDN interworking and supplementary service interaction use it to decide how CLIR behaves during call setup and routing.

What changed in SIST EN 300 093-1 V1.2.4:2005 from the previous edition?

Annex C records three changes from the previous ETS 300 093-1:

• conversion to EN layout
• replacement of references to ETS 300 102 with EN 300 403
• substitution of non-specific references to basic standards with references intended to track the latest version

The foreword also says this version updates the references to the basic call specifications.

Which standards are used with SIST EN 300 093-1 V1.2.4:2005?

Standard	What it contributes
CCITT Recommendation I.411	ISDN user-network interface reference configurations
CCITT Recommendation I.130	The three-stage method used to describe ISDN services
CCITT Recommendation I.112	ISDN vocabulary
CCITT Recommendation E.164	ISDN numbering plan and structure
EN 300 403-1	Basic call control and calling party number coding
EN 300 195-1	Interaction rules with other supplementary services
ETS 300 090	CLIR service description and provision/withdrawal context
EN 300 092-1	Related CLIP protocol handling and destination-side actions
CCITT Recommendation I.210	Principles used to describe ISDN telecommunications services
CCITT Recommendation Z.100	SDL notation for the dynamic description

The foreword also names ETS 300 091 as the stage 2 companion part, while Parts 2 to 6 of the series cover conformance statements and test suites.

What does the SIST EN 300 093-1 V1.2.4:2005 document contain?

SIST EN 300 093-1 V1.2.4:2005 contains the protocol description, operational rules and message handling for CLIR. Clause 9 gives the signalling procedures at the coincident S and T reference point, and clause 14 gives an SDL-based dynamic description with a flow for the originating network side.

Annex A provides signalling flow information, and Annex B explains terminal interchangeability between public and private ISDNs. Annex C records the change history against the previous edition, and Annex D lists bibliography items used by the standard.

The document is therefore useful for protocol design, implementation, interoperability checks and conformance testing.

SLOVENSKI STANDARD
01-april-2005
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Integrated Services Digital Network (ISDN); Calling Line Identification Restriction (CLIR)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification
Ta slovenski standard je istoveten z: EN 300 093-1 Version 1.2.4
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.

EN 300 093-1 V1.2.4 (1998-06)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Calling Line Identification Restriction (CLIR)
supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification

2 EN 300 093-1 V1.2.4 (1998-06)
Reference
REN/SPS-05145-D-1 (0v090iqo.PDF)
Keywords
ISDN, CLIR, DSS1, supplementary service
ETSI
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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 1998.
All rights reserved.
ETSI
3 EN 300 093-1 V1.2.4 (1998-06)
Contents
Intellectual Property Rights.4
Foreword .4
1 Scope.6
2 Normative references .6
3 Definitions.7
4 Abbreviations.7
5 Description.7
6 Operational requirements.8
6.1 Provision and withdrawal. 8
6.2 Requirements on the originating network side. 8
6.3 Requirements on the destination network side. 8
7 Coding requirements .8
8 State definitions .8
9 Signalling procedures at the coincident S and T reference point .8
9.1 Activation, deactivation and registration . 8
9.2 Actions at the originating user . 8
9.2.1 Normal operation . 8
9.2.2 Exceptional procedures . 8
9.3 Actions at the originating local exchange . 9
9.3.1 Normal operation . 9
9.3.2 Exceptional procedures . 9
9.4 Actions at the destination local exchange . 9
9.4.1 Normal operation . 9
9.4.2 Exceptional procedures . 9
10 Procedures for interworking with private ISDNs .9
11 Interaction with other networks .9
12 Interaction with other supplementary services.9
13 Parameter values (timers).10
14 Dynamic description (SDL diagrams) .10
Annex A (informative): Signalling flows.11
Annex B (informative): Terminal interchangeability between public and private ISDNs .12
Annex C (informative): Changes with respect to the previous ETS 300 093-1 .13
Annex D (informative): Bibliography.14
History.15
ETSI
4 EN 300 093-1 V1.2.4 (1998-06)
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 free of charge from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (http://www.etsi.fr/ipr or 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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Signalling
Protocols and Switching (SPS).
The present document is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No. one
(DSS1) protocol specification for the Integrated Services Digital Network (ISDN) Calling Line Identification Restriction
(CLIR) supplementary service, as described below:
Part 1: "Protocol specification";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification for the user";
Part 4: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the user";
Part 5: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network";
Part 6: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network".
In accordance with CCITT Recommendation I.130, the following three level structure is used to describe the
supplementary telecommunications services as provided by European public telecommunications operators under the
pan-European Integrated Services Digital Network (ISDN):
- Stage 1: is an overall service description, from the user's standpoint;
- Stage 2: identifies the functional capabilities and information flows needed to support the service described in
stage 1; and
- Stage 3: defines the signalling system protocols and switching functions needed to implement the service
described in stage 1.
The present document details the stage three aspects (signalling system protocols and switching functions) needed to
support the Calling Line Identification Restriction (CLIR) supplementary service. The stage one and stage two aspects
are detailed in ETS 300 090 and ETS 300 091, respectively.
The present version updates the references to the basic call specifications.
ETSI
5 EN 300 093-1 V1.2.4 (1998-06)
National transposition dates
Date of adoption of this EN: 19 June 1998
Date of latest announcement of this EN (doa): 30 September 1998
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 1999
Date of withdrawal of any conflicting National Standard (dow): 31 March 1999
ETSI
6 EN 300 093-1 V1.2.4 (1998-06)
1 Scope
This first part of EN 300 093 specifies the stage three of the Calling Line Identification Restriction (CLIR)
supplementary service for the pan-European Integrated Services Digital Network (ISDN) as provided by European
public telecommunications operators at the T reference point or coincident S and T reference point (as defined in
CCITT Recommendation I.411 [1]) by means of the Digital Subscriber Signalling System No. one (DSS1). Stage three
identifies the protocol procedures and switching functions needed to support a telecommunications service (see CCITT
Recommendation I.130 [2]).
In addition the present document specifies the protocol requirements at the T reference point where the service is
provided to the user via a private ISDN.
The present document does not specify the additional protocol requirements where the service
...