SIST-TP ETSI/TR 101 480 V1.1.2:2005

• Abstract:

  This ETR describes the general requirements for presenting calling party name information to users connected to the PSTN or ISDN. The ability of the calling party to restrict the presentation of his name is also covered.

• Status: Published
• Publication Date: 31-Dec-2004
• ICS: 33.040.35 - Telephone networks
• 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 TR 101 480 V1.1.2 (1999-12) - Integrated Services Digital Network (ISDN); Public Switched Telephone Network (PSTN); Framework for the provision of calling party name information

SIST-TP ETSI/TR 101 480 V1.1.2:2005 is the Slovenian publication of ETSI TR 101 480, a Technical Report on Integrated Services Digital Network (ISDN) and Public Switched Telephone Network (PSTN) calling party name information. It gives general requirements for presenting calling party name information and for restricting that presentation, for services such as CNIP and CNIR.

What does SIST-TP ETSI/TR 101 480 V1.1.2:2005 specify?

SIST-TP ETSI/TR 101 480 V1.1.2:2005 sets out requirements, observations, and areas for further investigation for services that present or restrict calling name information on PSTN and ISDN. It is a framework for service definition and network behavior, not a detailed implementation specification.

The scope covers two supplementary services:

• CNIP - Calling Name Identification Presentation, which delivers the calling party name to the called user
• CNIR - Calling Name Identification Restriction, which lets the calling user prevent presentation of the name

The document excludes interactions with supplementary services, quality of service, and charging aspects. That matters because the report focuses on naming service behavior itself, rather than wider service bundles or billing.

The document is organized into:

• Scope
• References
• Abbreviations
• Analysis of requirements, with subclauses on general issues, CNI presentation, CNI restriction, procedures, network scenarios, and interworking
• Bibliography
• History

What are the key requirements of SIST-TP ETSI/TR 101 480 V1.1.2:2005?

The report’s main contribution is to frame how calling name information should behave across PSTN and ISDN, and to highlight the service options that operators and implementers need to decide. Several points are presented as observations for further work rather than final rules.

CNI presentation

Clause 4.2 says calling name information may be delivered on PSTN interfaces on-hook, during ringing, or off-hook, while ISDN should deliver it at call set-up time. In practice, this means terminals and network signaling have to match the delivery timing, or the called user will not see the name when expected.

Clause 4.2 also notes that names may need different presentation styles such as personal, formal, or business. For a service provider, this means a caller may need to choose which name form is sent for a specific call.

The same clause proposes that the calling user may select a predefined network-known name or provide a user-defined name for presentation. That matters where one line serves more than one person or where a caller wants different names used in different contexts.

CNI restriction

Clause 4.3 says the calling party should be able to control release of calling name identification on a per-line basis or a per-call basis. In practice, this gives users a permanent privacy setting and a temporary one for individual calls.

The report also describes service profile options for CNIR, including permanent or temporary restriction and a default for temporary mode. That means service providers need to define what the line does by default and how users override it.

Clause 4.3 distinguishes three presentation outcomes when both name and number are involved:

• no restriction, where name and number are shown
• partial restriction, where one is shown
• complete restriction, where neither is shown

This is important for interworking and user privacy because the network must carry the right restriction indication, not just the name data.

Procedures and service behavior

Clause 4.4 says CNI services may be provided by prior arrangement or be generally available, and can be withdrawn at the served user’s request or for administrative reasons. That tells operators how service provisioning and removal may be handled.

Clause 4.5 says registration and erasure are not applicable. It also says the service provider activates CNI at provision and deactivates it at withdrawal, while user activation, deactivation, and interrogation are optional for the presentation service and should trigger notifications to the user.

For CNIR, the report says no user procedures are foreseen in the associated reference document. That means the restriction service is described as network-controlled rather than user-interrogated in this report.

Network scenarios and interworking

Clause 4.6 identifies two delivery models for CNI: a centralized database queried by the destination exchange, or name sent in the IAM during call establishment. This matters because service design depends on whether name data is retrieved before the call is answered or carried in call signaling.

Clause 4.7 says interworking should be allowed between PSTN, ISDN, mobile, and private networks, and the presentation-restricted or allowed indication should be passed between networks. That is the key practical point for operators: the privacy status must survive network boundaries, not just the name itself.

What terms does SIST-TP ETSI/TR 101 480 V1.1.2:2005 define?

• CLI (Calling Line Identity) - the calling party number identity associated with a call.
• CNI (Calling Name Identity) - the name information associated with a specific calling party number.
• CNIP (Calling Name Identification Presentation) - the supplementary service that presents the calling party name to the called user.
• CNIR (Calling Name Identification Restriction) - the supplementary service that prevents presentation of the calling user’s name information.
• IA5 (International Alphabet N°5) - the character coding mentioned for PSTN local-loop display services.
• IAM (ISDN User Part Initial Address Message) - the signaling message in which CNI may be carried in one of the network scenarios.
• ISDN (Integrated Services Digital Network) - the digital network environment covered by the report.
• PSTN (Public Switched Telephone Network) - the traditional telephone network environment covered by the report.

Who uses SIST-TP ETSI/TR 101 480 V1.1.2:2005?

SIST-TP ETSI/TR 101 480 V1.1.2:2005 is used by telecom service providers, network engineers, and standards specialists working on PSTN and ISDN supplementary services. It is also relevant to terminal developers because the report notes that devices may need to display received characters and handle different delivery timings.

Quality managers and product planners can use it to check whether a service design supports CNIP and CNIR behavior, privacy handling, and interworking. Buyers and integrators can use it to understand what a network or platform is expected to support when calling name services are part of the requirement.

Which standards are used with SIST-TP ETSI/TR 101 480 V1.1.2:2005?

The only normative reference named in the document body is:

• ETS 300 659-1 - Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display and related services; Part 1: On hook data transmission

The report uses this reference for the PSTN local-loop display protocol and its IA5-coded name parameter. That makes it the key companion standard for implementations that carry calling name information on the PSTN loop.

What does the SIST-TP ETSI/TR 101 480 V1.1.2:2005 document contain?

The document contains a requirements analysis for calling name presentation and restriction, with separate discussion of general issues, presentation behavior, restriction behavior, service procedures, network scenarios, and interworking. It also includes observations that point to open design choices, such as name format, delivery timing, default restriction behavior, and whether one service should cover both name and number.

It refers to PSTN and ISDN signaling behavior, including delivery at call set-up, on-hook display, and IAM carriage. It also discusses network architectures based on a centralized database or on signaling insertion during call establishment.

The bibliography points to related CLIP and CLIR service descriptions, CNIP and CNIR recommendations, and several PSTN, ISDN, private network, and North American sources. In practice, that bibliography helps readers trace the service family and compare name services with the earlier calling line identity work.

SLOVENSKI STANDARD
01-januar-2005
'LJLWDOQRRPUHåMH]LQWHJULUDQLPLVWRULWYDPL,6'1±-DYQRNRPXWLUDQRWHOHIRQVNR
RPUHåMH3671±2NYLU]D]DJRWRYLWHYLQIRUPDFLMHRLPHQXNOLþRþHJD
Integrated Services Digital Network (ISDN); Public Switched Telephone Network (PSTN);
Framework for the provision of calling party name information
Ta slovenski standard je istoveten z: TR 101 480 Version 1.1.2
ICS:
33.040.35 Telefonska omrežja Telephone networks
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.

Technical Report
Integrated Services Digital Network (ISDN);
Public Switched Telephone Network (PSTN);
Framework for the provision of
calling party name information

2 ETSI TR 101 480 V1.1.2 (1999-12)
Reference
DTR/SPAN-020048
Keywords
ISDN, CNIP, CNIR, PSTN, stage 1,
supplementary service
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The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1999.
All rights reserved.
ETSI
3 ETSI TR 101 480 V1.1.2 (1999-12)
Contents
Intellectual Property Rights.4
Foreword.4
1 Scope .5
2 References.5
3 Abbreviations .5
4 Analysis of requirements.6
4.1 General issues.6
4.2 Description of CNI presentation.6
4.3 Description of CNI restriction .7
4.4 Procedures .8
4.4.1 Provision and withdrawal.8
4.5 Procedure.8
4.5.1 Registration and Erasure.8
4.5.2 Activation, deactivation and interrogation.8
4.5.3 Invocation and operation .9
4.6 Network scenarios .9
4.7 Interworking considerations .9
Bibliography.10
History .11
ETSI
4 ETSI TR 101 480 V1.1.2 (1999-12)
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 Technical Report (TR) has been produced by ETSI Technical Committee Services and Protocols for Advanced
Networks (SPAN).
The present document describes the general requirements for presenting calling name information to users connected to
PSTN or ISDN. The ability of the calling party to restrict the presentation of its name is also covered.
ETSI
5 ETSI TR 101 480 V1.1.2 (1999-12)
1 Scope
The present document gives a set of requirements, observations and areas of further investigations to be used in order to
base further actions in ETSI, regarding services that deal with presenting and restricting calling name information to
users connected to PSTN or ISDN. The following supplementary services are within the scope of the present document:
- Calling Name Identification Presentation (CNIP) is a supplementary service which is offered to the called user
and which provides name information associated with the calling user (calling party name) to the called user;
- Calling Name Identification Restriction (CNIR) is a supplementary service which is offered to the calling user
to prevent presentation of the user's name information to the called user.
The identification of requirements is based on analysing existing or emerging European standards and international
recommendations on calling name information. Furthermore, due to the obvious clear analogy with CLI services,
European standards on CLI management for PSTN and ISDN users have been taken into account.
The CNIP and CNIR services on the PSTN and ISDN are offered in United States of America and Canada, where the
market is more developed especially in terms of residential phone services and business applications. These services are
considered enhanced CLI services. Within Europe some service providers are performing field trials.
The following aspects are excluded from the scope of the present document:
a) Interactions with supplementary services;
b) Quality of service;
c) Charging aspects.
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, the latest version applies.
• 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] ETS 300 659-1: "Public Switched Telephone Network (PSTN); Subscriber line protocol over the
local loop for display (and related) services; Part 1: On hook data transmission".
3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
CLI Calling Line Identity
CNI Calling Name Identity
CNIP Calling Name Identification Presentation
CNIR Calling Name Identification Restriction
IA5 International Alphabet N°5
IAM ISDN User Part Initial Address Message
ISDN Integrated Services Digital Network
PSTN Public Switched Telephone Network
ETSI
6 ETSI TR 101 480 V1.1.2 (1999-12)
4 Analysis of requirements
4.1 General issues
CNI is name information associated with a specific calling party number. The length, format and character set of the
CNI should be defined in order to meet the different characteristics of European names. A minimum length should be
agreed to facilitate interworking between networks. The provision of a new service that transmits names requires the
development or updating of terminals to be able to display the received characters set. In PSTN protocol over the local
loop (ETS 300 659-1 [1]) a name parameter coded in IA5 is specified.
Observation 1: Further investigation is required into the characteristics of the CNI and the impact on ISDN and
PSTN terminals.
Although one can imagine that most of the regulations applicable to a CLI number may be extended to a name service, it
is clear that a name service may need some more specific regulation. For example, ex-directory subscribers who do not
want the association between their number and their name to be published may request even stronger restrictions
concerning the delivery of their names than of their numbers, or they may agree to have their names transmitted but not
their numbers.
Observation 2: Different regulations are expected for calling name services (e.g. for ex-directory subscribers).
Depending on national regulations, some networks may define categories of subscriber that have the ability to override
the presentation restriction and have the CNI presented (e.g. the police). The ability to have such override category is a
national option.
Observation 3: The ability to have categories of user that have the possibility to override the presentation
restriction of CNI should be taken into account.
Both CNI and CLI may be delivered if the called user is subscribed to both CNIP and CLIP. Likewise, both CNI and
CLI may be treated as "private" or "public" for that particular incoming call taking into account the network stored
values associated with CLI and CNI of the calling user, or regardless the network stored values associated.
Observation 4: Allow the capability to provide both CNI and CLI, and if possible invoke restriction or release of
oneorbothwithasinglecommand.
Observation 5: Evaluate if the override category for CNIR could be related to the override category of CLIP.
Ob
...