SIST-TP ETSI/TR 101 779 V1.1.1:2005

• Abstract:

  Identification of new capabilities of the SRF. In particular it is proposed to study the following aspects: Identify the additional functionality of the SRF to support the telecommunication services targeted for the CS-3

• Status: Published
• Publication Date: 31-Dec-2004
• ICS: 33.040.35 - Telephone networks
• 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 101 779 V1.1.1 (2000-03) - Enhanced SRF phase 2; Enhancement to the modelling and capabilities of the SRF phase 2

SIST-TP ETSI/TR 101 779 V1.1.1:2005 is the Slovenian adoption of ETSI TR 101 779 V1.1.1, a Technical Report on enhancing the modelling and capabilities of the Specialized Resource Function (SRF). It discusses how the SRF should support Intelligent Network service creation, especially for multimedia, Internet-based, and voice-processing services, and it is useful for engineers working on SCF-SRF interactions and service logic design.

What does SIST-TP ETSI/TR 101 779 V1.1.1:2005 specify?

SIST-TP ETSI/TR 101 779 V1.1.1:2005 specifies an enhancement study for the SRF in Intelligent Network architectures. The report uses reference services to identify SRF capabilities needed for targeted telecommunications services, with CS-3 services used as reference cases and CS-4 as the broader context.

The document is organized into:

• Scope, references, and abbreviations
• An introduction to the role of the SRF
• Service scenarios
• Resources
• The SRF model
• The SRF Service Creation Environment

In practice, that structure helps readers move from service examples to the capabilities and tooling needed to implement them.

What are the key requirements of SIST-TP ETSI/TR 101 779 V1.1.1:2005?

SIST-TP ETSI/TR 101 779 V1.1.1:2005 identifies the SRF capabilities that support interactive, resource-intensive services. The main message is that the SRF should handle media processing, user dialogue, and service logic execution locally, so the SCF can focus on higher-level control.

Service support and interaction

Clause 5 describes target service areas such as broadband multimedia services, Internet-based services, and other services including Voice Calling Card and Unified Messaging. This matters because the SRF is expected to support user interaction for services like Video On demand, Broadband TV, Broadband Video Conference, click-to-fax, click-to-fax back, and Voice Access to Content.

Multimedia handling

Clause 5.1 says multimedia sessions involve a Multimedia Controller, a Control Connection, and a Media Connection. The SRF is used to manage user interaction and, in some cases, act as the interface between the user and the SCF. For readers, this means the SRF is not just a passive resource pool - it is part of the live control path for multimedia sessions.

Dynamic resource use

Clause 5.1 and Clause 6 both stress Dynamic Resource Allocation. The SRF should allocate resources according to the actual media or dialogue phase rather than reserving maximum capacity for the whole session. In practice, this affects design of media servers and resource schedulers because capacity must change during the call or session.

SRF resources

Clause 6 identifies three main SRF resource areas:

• Speaker Verification
• Storage and downloading of software to a STB
• Dynamic Resource Allocation

These are the core capabilities the report expects the SRF to provide or enhance. They are especially relevant where the user authenticates by voice, or where a Set Top Box needs software or configuration support.

Data manipulation and security

Clause 7.1 describes a workflow where the SCF retrieves data, instructs the SRF to run a Mini-Script, sends data to be modified, and receives updated data back. The same clause highlights authentication, including passwords, PINs, and speaker verification. In practice, that means SRF-based customer control tasks must be designed with identity checks and controlled data updates.

Service creation environment

Clause 8 calls for a graphical user interface (GUI) and tools to define, verify, generate, compile, test, and install Mini-Scripts without disrupting services. For implementers, this is the part that turns SRF capabilities into deployable service logic.

What terms does SIST-TP ETSI/TR 101 779 V1.1.1:2005 define?

• SRF - Specialized Resource Function: The IN element that performs resource-intensive processing and user interaction.
• SCF - Service Control Function: The IN control element that handles service control and call-routing related tasks.
• Mini-Scripts: Predefined service logic sequences that the SRF can execute for menus, prompts, collection, and similar dialogue tasks.
• STB - Set Top Box: The user terminal discussed for Video On demand and related service download support.
• VOD - Video On Demand: A service where the user selects and controls audiovisual content with VCR-like functions.
• B-ISDN - Broadband Integrated Services Digital Network: The broadband network context used for multimedia and conferencing services.
• GUI - Graphical User Interface: The interface proposed for creating Mini-Scripts and service logic.

Who uses SIST-TP ETSI/TR 101 779 V1.1.1:2005?

SIST-TP ETSI/TR 101 779 V1.1.1:2005 is used by Intelligent Network architects, service designers, telecom engineers, and vendors building SCF and SRF implementations. It is also relevant to multimedia service providers, network operators, and teams creating voice-processing, conferencing, and Internet-to-telephony services. Quality and interoperability teams can use it to understand expected SRF behavior in service creation and runtime interaction.

Which standards are used with SIST-TP ETSI/TR 101 779 V1.1.1:2005?

The report relies on several related standards and reports:

• ITU-T Q.123X - the Intelligent Network base reference mentioned in the foreword.
• ETSI TCRTR 027 - the vocabulary of terms and abbreviations.
• ETSI ETR 199 - earlier work on SRF modelling and capabilities.
• ITU-T I.375 - network capabilities for multimedia services.
• ITU-T Q.1204 - the distributed functional plane architecture used for SRF interaction concepts.
• ITU-T I.211 - B-ISDN service aspects and multimedia service categories.

What does the SIST-TP ETSI/TR 101 779 V1.1.1:2005 document contain?

The document contains service descriptions, resource discussions, a model of the SRF, and guidance for a service creation environment. It includes an example transaction between SCF and SRF, plus a data flow figure showing how data is passed, updated, and returned. It also outlines multimedia session concepts, web-based IN interworking scenarios, and speaker verification as a resource. For implementers, the most useful parts are the service scenarios in Clause 5, the resource list in Clause 6, the SRF model in Clause 7, and the Mini-Script environment described in Clause 8.

SLOVENSKI STANDARD
01-januar-2005
Izboljšana faza 2 SFR – Izboljšanje modeliranja in zmožnosti faze 2 SRF
Enhanced SRF phase 2; Enhancement to the modelling and capabilities of the SRF
phase 2
Ta slovenski standard je istoveten z: TR 101 779 Version 1.1.1
ICS:
33.040.35 Telefonska omrežja Telephone networks
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Technical Report
Enhanced SRF phase 2;
Enhancement to the modelling and capabilities
of the SRF phase 2
2 ETSI TR 101 779 V1.1.1 (2000-03)
Reference
DTR/SPAN-060702
Keywords
IN
ETSI
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ETSI
3 ETSI TR 101 779 V1.1.1 (2000-03)
Contents
Contents.3
Intellectual Property Rights.4
Foreword .4
1 Scope.5
2 References.5
3 Abbreviations .5
4 Introduction.6
5 Services .7
5.1 Broadband Multimedia Services .8
5.1.1 Video On demand.9
5.1.2 Broad Band TV .9
5.1.3 Video Conference.10
5.1.3.1 Communication configuration .10
5.1.3.2 Examples of Applications.10
5.2 Internet based services .10
5.2.1 Web based services .11
5.3 Other Services.11
5.3.1 Voice Calling Card service.11
6 Resources .11
6.1 Speaker Verification .12
7 The SRF model .12
7.1 Data Manipulation in the SRF.12
8 The SRF Service Creation Environment.13
Bibliography.15
History.16
ETSI
4 ETSI TR 101 779 V1.1.1 (2000-03)
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 Signalling and Protocols for Advanced
Networks (SPAN).
The present document is based on ITU-T Q-series Intelligent Network Recommendations, ITU-T Recommendation
Q.123X [1].
Intelligent Network (IN) Capabilities Set 4 (CS-4) is the fourth standardized stage of the IN as an architectural concept
for the creation and provision of services, including telecommunications services, management services and service
creation.
ETSI
5 ETSI TR 101 779 V1.1.1 (2000-03)
1 Scope
The scope of the present document will be the definition of enhancement to the modelling and the capabilities of the
Specialized Resource Function (SRF).
Reference services capabilities for the enhancement of the SRF are the targeted telecommunications services that should
be supported by CS-3.
These services are for reference purpose only: other services could be considered in identifying the SRF enhancement as
work on CS-3 progresses.
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] ITU-T Recommendation Q.123X: "Intelligent Networks".
NOTE: Not yet published.
[2] ETSI TCRTR 027: "Intelligent Network (IN); Vocabulary of terms and abbreviations".
[3] ETSI ETR 199: "Network Aspects (NA); Enhancement to the modelling and capabilities of the
Specialised Resource Function (SRF)".
[4] ITU-T Recommendation I.375: "Network Capabilities to support Multimedia Services".
[5] ITU-T Recommendation Q.1204: "Intelligent network distributed functional plane architecture".
[6] ITU-T Recommendation I.211: "B-ISDN service aspects".
3 Abbreviations
For the purposes of the present document, the symbols and abbreviations given in TCRTR 027 [2] and the following
apply:
B-ISDN Broadband - Integrated Services Digital Network
BVC Broadband Video Conference
GUI Graphical User Interface
SCIE Service Creation Environment
SCF Service Control Function (IN term)
SRF Specialized Resource Function
STB Set Top Box
VCC Voice Calling Card
VCR Video Cassette Recorder
VOD Video On Demand
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6 ETSI TR 101 779 V1.1.1 (2000-03)
4 Introduction
The enhancement to the capabilities of the SRF will be driven by new services that need complex voice-processing.
These services grew outside of the SSF in the form of interactive voice response systems, voice mail systems and
automated operators. These systems embraced new technologies including facsimile, speaker-dependent and speaker-
independent voice recognition, text-to-speech and voice identification. These processes do not involve any call routing,
so it is logical to manage these parts of the application on the SRF.
These services need many complex resources, in some cases at the same time, or the same sequential actions to provide
specific procedures. The SRF could provide a part of the service logic using Mini-Scripts [3]. These "dialogues" contain
the sequential actions, already defined, necessary to execute a part of the procedures.
The SCF manages database functions and performs tasks such as call routing; the SRF performs intensive resource
processing, providing local intelligence and processing power to interpret user requirements.
ETSI
7 ETSI TR 101 779 V1.1.1 (2000-03)
Request for Instructions
Play Application Request
Application: Menù
Valid Selection 1,2,3
Initial message
Error message
Timeout message
Max errors 3
Max timeouts 3
Timeout duration 7 seconds
SCF
SRF
Play Application Response
Status: successful
Digit collection three
Input errors 2
Timeout errors 1
Figure 1: An example of transaction between SCF and SRF
The use of Mini-Scripts defined in [3] can reduce the number of messages sent between the SCF and SRF, for example:
complex error-processing logic and a variety of messages are set in place on the SCF to handle a simple menu; instead, a
PlayApplicationRequest (a type of Mini-Scripts) could be used in conjunction with the menu-handling facilities on the
SRF to reduce the complexity of the transaction.
5 Services
This section lists the proposed CS-4 targeted services/service features in broad outline. Note that the definitions for
targeted telecommunications services are only preliminary descriptions in the initial phase of the study. They are a
useful reference for the description of the general CS-4 services/service features capabilities, which, in turn, are
fundamental to the scope of this draft, proposed CS-4 SRF enhancement. As such, the services/service features
definitions are for this purpose only and should not be considered as standardized definitions.
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8 ETSI TR 101 779 V1.1.1 (2000-03)
Moreover, it should be noted that these services are for reference purpose only: other services could be considered in
identifying the SRF enhancement as work on CS-4 progresses.
The CS-3 targeted telecommunications services which represent a reference for the SRF enhancement, are as follows:
• broadband Multimedia services;
• internet based services;
• personal mobility;
• terminal mobility.
New service features are as follows:
• Message Waiting Indication;
• B-ISDN Multiple connections point to point;
• B-ISDN Multi-casting;
• B-ISDN Conferencing;
• data communication between different protocol terminals;
• charge Card Validation;
• call Disposition;
• enhanced Charge Card Validation.
5.1 Broadband Multimedia Services
For multimedia services the SRF should be able to interact with image and vocal signals, which means that the SRF
should contain commands to go backwards and forwards (both also in fast mode), pause and so on. These procedures
could be executed as defined Mini-Scripts. At the end of the Mini-Scripts running, the SRF should return information to
the SCF on the results of the interaction with the user.
In multimedia communications, the resource hunting process deals with both a large volume of resources and many
types of resources. The many resource types result in the occurrence of a great many combinations when the time axis
and the location axis are considered in parallel.
Transmission of multimedia documents over networks will constitute, in the near future, an attractive Value Added
Service.
Multimedia services are characterized by Multimedia Session, which is generically defined here as composed of three
different entities:
- Multimedia Controller: which is the entity responsible for the control of the session;
- Control Connection: which is the connection established between each user and the Multimedia Controller to
exchange session control information;
- Media Connection: which is the connection between the users to exchange Media information.
The most important constraints identified are:
- Dynamic Resource Allocation: the Multimedia information exchanges, during a Multimedia session, may be of
very different types, each one requiring different resources to be transmitted. There is no sense in allocating the
maximum resources needed for the entire duration of the session, because they might not be in use most of the
time. This implies the need for Dynamic Resource Allocation. The control of this dynamism could be managed
by the SRF without the direct control of the SCF.
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9 ETSI TR 101 779 V1.1.1 (2000-03)
- Events During Session: these applications are, by nature, highly interactive. This implies the existence of events
during the Multimedia session. These events can be automatically generated by the application (like Mini-
Scripts) or can represent explicit requests from the users.
- Multiparty: some Multimedia Applications will certainly require several users interconnected in an impracticable
way. This implies the possibilit
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