SIST ETS 300 649 E1:2004

• Abstract:

  Definition of the supplementary service calling line identification restriction for the PSTN

• Status: Published
• Publication Date: 30-Sep-2004
• ICS: 33.040.35 - Telephone networks
• Technical Committee: SPS - Signalling protocols and switching
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-2004
• Due Date: 01-Oct-2004
• Completion Date: 01-Oct-2004
• Mandate: T-036-SI
• Ref Project: ETSI ETS 300 649 ed.1 (1997-03) - Public Switched Telephone Network (PSTN); Calling Line Identification Restriction (CLIR) supplementary service; Service description

SIST ETS 300 649 E1:2004 is a Slovenian standard identical to ETS 300 649 Edition 1. It specifies the stage 1 service description for Calling Line Identification Restriction (CLIR) on the Public Switched Telephone Network (PSTN), so readers can see how the service works from the user's point of view.

What does SIST ETS 300 649 E1:2004 specify?

SIST ETS 300 649 E1:2004 defines the CLIR supplementary service for PSTN users and the way it is handled by public network operators. It focuses on service behaviour, interworking, and user-visible effects rather than on signaling details or charging.

The scope covers:

• the stage 1 description of CLIR for PSTN
• interworking between PSTNs and private networks, Integrated Services Digital Networks (ISDNs), and Public Land Mobile Networks (PLMNs)
• the effect of CLIR on calling line identity presentation
• the relationship to the subscriber line protocol standard that carries CLIR over the local loop

The document is organized into clauses 1 to 8:

• Scope
• Normative references
• Definitions
• Abbreviations
• Description
• Procedures
• Intercommunication considerations
• Interactions with other supplementary services

Charging principles, interactions with supplementary services not listed in clause 8, and test methods are outside the document's scope.

What are the key requirements of SIST ETS 300 649 E1:2004?

SIST ETS 300 649 E1:2004 says that CLIR applies to analogue access. In practice, this means the service is described for ordinary subscriber line access and PBX analogue line access, not as a general PSTN feature for every access type.

• Provision and subscription modes - clause 6.1
  CLIR can be offered in temporary mode after prior arrangement or as a generally available service, while permanent mode is provided after prior arrangement. The network shall support temporary mode at minimum. For buyers and planners, this means the network must at least support per-call restriction control.

• Temporary mode options - table 1 in clause 6.1
  The standard allows temporary mode defaults of presentation restricted or presentation not restricted. This matters because operators may let the user set how CLIR behaves by default on each line.

• Activation and deactivation - clause 6.2.2
  CLIR is activated on provision and deactivated on withdrawal. In practice, the service follows the subscription state of the line, so provisioning and deprovisioning processes must align with service activation.

• Invocation on the calling side - clause 6.2.3.1
  Permanent mode invokes CLIR automatically on every outgoing call. Temporary mode invokes CLIR automatically when the default is presentation restricted, unless the caller overrides it at call request time. If the default is presentation not restricted, CLIR is used only when requested for that call. This gives operators a clear rule for how caller privacy is applied.

• Called user side and override category - clause 6.2.3.2
  If the called user has CLIP and CLIR has been invoked, the called user receives an indication that the calling line identity is not available because it is restricted. The document also allows a national override category, such as a special user group that can override restriction. For implementation, this means the called network may need local rules for privileged access.

• Interrogation - clause 6.2.4
  A served user can interrogate the network to find the temporary mode default value, which returns either presentation restricted or presentation not restricted. This is useful where the line owner needs to confirm how the service is set.

• Interworking and precedence - clauses 7 and 8
  On internetwork calls, the originating network shall notify the destination network that the calling line identity is not allowed to be presented. Where CLIR applies, it takes precedence over Calling Line Identification Presentation (CLIP) unless a national override category applies. This is important for operators handling mixed-network calls.

What terms does SIST ETS 300 649 E1:2004 define?

SIST ETS 300 649 E1:2004 defines several service terms used throughout the document.

• Calling line identity - the number or other information that identifies the calling user.
• Served user - the user to whom CLIR is provided.
• Temporary mode - the mode in which the served user can choose, for each call, whether calling line identity may be presented.
• Permanent mode - the mode in which the network invokes CLIR automatically on all calls from the calling user.
• Override category - a special user category that can override CLIR and receive the calling line identity; this is a national matter.
• Analogue access - ordinary subscriber line access or PBX analogue line access.
• CLIP - Calling Line Identification Presentation.
• CLIR - Calling Line Identification Restriction.

Who uses SIST ETS 300 649 E1:2004?

SIST ETS 300 649 E1:2004 is used by public telecommunication operators, network operators, and service providers that offer caller identity privacy on PSTN lines. It is also relevant to engineers and implementers working on subscriber line protocol support, analogue access, PBX analogue lines, and interworking with ISDN, private networks, and PLMNs.

Quality and conformity teams use it to check that the service behaviour matches the stage 1 description, especially for provisioning, call-time invocation, and the handling of restricted caller identity.

What changed in SIST ETS 300 649 E1:2004 from the previous edition?

SIST ETS 300 649 E1:2004 is identical to ETS 300 649 Edition 1.

Which standards are used with SIST ETS 300 649 E1:2004?

SIST ETS 300 649 E1:2004 cites these normative references and companion standards:

• ETS 300 089 - CLIP service description for ISDN; provides the ISDN presentation service context.
• ETS 300 090 - CLIR service description for ISDN; provides the ISDN restriction service context.
• CCITT Recommendation I.130 - defines the stage 1, stage 2, and stage 3 service characterization model used in the foreword.
• ETS 300 648 - PSTN CLIP service description; gives the PSTN presentation counterpart to CLIR.
• ETS 300 659-1 - subscriber line protocol over the local loop for display and related services; this is the protocol standard that supports CLIR on the line.

What does the SIST ETS 300 649 E1:2004 document contain?

SIST ETS 300 649 E1:2004 contains a service description, not a test specification. It includes the service definition, the user-side behaviour for temporary and permanent modes, and the network-side procedures for provision, activation, invocation, and interrogation.

It also describes intercommunication with public ISDNs, private networks, and PLMNs, plus the interaction between CLIR and CLIP. Table 1 gives the subscription options for CLIR modes and temporary defaults, and clauses 6 and 7 describe how networks should behave in normal and internetwork calls.

SLOVENSKI STANDARD
01-oktober-2004
-DYQRNRPXWLUDQRWHOHIRQVNRRPUHåMH3671'RSROQLOQDVWRULWHYRPHMHYDQMD
LGHQWLWLILNDFLMHNOLþRþHJD&/,52SLVVWRULWYH
Public Switched Telephone Network (PSTN); Calling Line Identification Restriction
(CLIR) supplementary service; Service description
Ta slovenski standard je istoveten z: ETS 300 649 Edition 1
ICS:
33.040.35 Telefonska omrežja Telephone networks
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 649
TELECOMMUNICATION March 1997
STANDARD
Source: ETSI TC-NA Reference: DE/NA-010024
ICS: 33.020
Key words: CLIR, PSTN, supplementary service, stage 1
Public Switched Telephone Network (PSTN);
Calling Line Identification Restriction (CLIR)
supplementary service;
Service description
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
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 1997. All rights reserved.

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ETS 300 649: March 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 649: March 1997
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions.8
4 Abbreviations.8
5 Description .8
6 Procedures.8
6.1 Provision and withdrawal .8
6.2 Normal procedures .9
6.2.1 Registration and erasure.9
6.2.2 Activation and deactivation.9
6.2.3 Invocation and operation .9
6.2.3.1 Calling user side .9
6.2.3.2 Called user side.9
6.2.4 Interrogation .10
6.3 Exceptional procedures .10
6.3.1 Registration and erasure.10
6.3.2 Activation and deactivation.10
6.3.3 Invocation and operation .10
6.3.4 Interrogation .10
7 Intercommunication considerations.10
7.1 Interworking with public ISDNs .10
7.2 Interworking with private networks.10
7.3 Interworking with PLMNs .10
8 Interactions with other supplementary services .11
8.1 Calling line identification presentation.11
8.2 Calling line identification restriction.11
History.12

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ETS 300 649: March 1997
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ETS 300 649: March 1997
Foreword
This European Telecommunication Standard (ETS) has been produced by the Network Aspects (NA)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
In accordance with CCITT Recommendation I.130 [3], the following three level structure is used to
describe supplementary telecommunications services for the 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 principle of this three level structure has been used to develop the service description for the Calling
Line Identification Restriction (CLIR) supplementary service as provided by European public
telecommunication operators for the Public Switched Telephone Network (PSTN).
This ETS details the stage 1 aspects (overall service description) for the Calling Line Identification
Restriction (CLIR) supplementary service for the PSTN.
ETS 300 659-1 [5] specifies the subscriber line protocol for the CLIR supplementary service.
Transposition dates
Date of adoption 21 February 1997
Date of latest announcement of this ETS (doa): 30 June 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 December 1997
Date of withdrawal of any conflicting National Standard (dow): 31 December 1997

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ETS 300 649: March 1997
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ETS 300 649: March 1997
1 Scope
This European Telecommunication Standard (ETS) defines the stage one of the Calling Line Identification
Restriction (CLIR) supplementary service for the Public Switched Telephone Network (PSTN) as provided
by European public network operators. Stage one is an overall service description from the user's point of
view (see CCITT Recommendation I.130 [3]), but does not deal with the details of the human interface
itself.
This ETS defines the interworking requirements between PSTNs and private networks, PSTNs and
Integrated Services Digital Networks (ISDNs), and Public Land Mobile Networks (PLMNs).
Interactions with supplementary services not listed in clause 8 are outside the scope of this ETS.
Charging principles are outside the scope of this ETS.
The CLIR supplementary service enables the calling party to prevent presentation of its calling line identity
to the called party.
This ETS is applicable to the ETS containing the subscriber line protocol to support the CLIR
supplementary service. Where the text indicates the status of a requirement (i.e. as strict command or
prohibition, as authorization leaving freedom, or as a capability or possibility), this shall be reflected in the
text of that standard.
Furthermore, conformance to this ETS is met by conforming to the standards containing the subscriber
line protocol to support the CLIR supplementary service with the field of application appropriate to the
equipment being implemented. Therefore no method of testing is provided for this ETS.
2 Normative references
This ETS incorporates by dated or undated reference provisions
...