SIST ETS 300 109 E1:2003

• Abstract:

  DE/NA-012236

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 109 ed.1 (1992-08) - Integrated Services Digital Network (ISDN); Circuit-mode 64 kbit/s 8 kHz structured bearer service category usable for speech information transfer; Service description

SIST ETS 300 109 E1:2003 is the Slovenian adoption of ETS 300 109 Edition 1 from ETSI. It defines the stage 1 service description for the Integrated Services Digital Network (ISDN) circuit-mode 64 kbit/s 8 kHz structured bearer service category usable for speech information transfer. The document is aimed at operators and implementers who need the service model, call handling rules, and the service attributes used to characterize it.

What does SIST ETS 300 109 E1:2003 specify?

SIST ETS 300 109 E1:2003 specifies the user-level description of this ISDN bearer service, including how it is offered, how calls are set up and cleared, how it interacts with other networks, and how it is characterized by attributes. It also states what is outside scope, so readers can see which topics are handled elsewhere.

The standard is organized into:

• Scope
• Normative references
• Definitions
• Symbols and abbreviations
• Description
• Procedures
• Intercommunication considerations
• Interaction with other supplementary services
• Static description of the service using attributes
• Dynamic description
• Annex A with a bibliography

In scope are public ISDN service behavior, interworking with private ISDN, and the service’s stage 1 description. Outside scope are charging principles, the values of general attributes, and the human interface details.

What are the key requirements of SIST ETS 300 109 E1:2003?

Service model and media

SIST ETS 300 109 E1:2003 defines a circuit-mode bearer service for speech transfer between reference points, using 64 kbit/s digital speech over the B channel. It supports both point-to-point and multipoint use, and the network may apply speech-oriented processing such as echo control or low bit rate encoding.

This matters because the service is not a generic transparent data bearer. The standard says bit integrity is not assured and the service is not intended for modem derived voice band data.

Provisioning, variants, and call handling

SIST ETS 300 109 E1:2003 allows three service variants for establishment of communication: on demand, reserved, and permanent. The procedures in clause 6.2 apply to the demand variant, while reserved and permanent variants do not use invocation procedures.

Provision is by prior arrangement with the network operator. The interface may be subject to subscription options such as the maximum number of information channels and the maximum number of total calls present, with separate limits possible for incoming and outgoing calls.

Exceptions and network indications

SIST ETS 300 109 E1:2003 requires the network to give appropriate indications when a service request is improper, an ISDN number is invalid or incorrect, address information is incomplete, the called user is busy, the terminal does not respond, or network conditions such as congestion prevent setup.

The document also defines a retention timer for certain failure cases. The network may retain the calling user’s supplied information for the duration of that timer, and the timer value is greater than 15 seconds.

Interworking and service attributes

SIST ETS 300 109 E1:2003 requires interworking with the PSTN and says the calling user shall be told when interworking has occurred. It also says that if in-band communication is interrupted because of a supplementary service, the network shall provide an appropriate B channel indication such as all ones or idle signal.

The static attributes are specific: circuit mode, 64 kbit/s, speech, 8 kHz integrity, bidirectional symmetric communication, and point-to-point or multipoint configuration. Speech is encoded according to G.711 A-law, and where an international boundary crosses different coding laws, the network applying μ-law performs the conversion.

Access and control channels

SIST ETS 300 109 E1:2003 uses the B channel for user information and the D channel for signalling. Signalling access may use 16 kbit/s or 64 kbit/s, and clause 10 states that the dynamic description for the demand variant follows CCITT Recommendation I.220.

This tells implementers where speech traffic travels, where signalling travels, and which external description governs call dynamics.

What terms does SIST ETS 300 109 E1:2003 define?

• ISDN - Integrated Services Digital Network, the network environment for the service.
• ISDN number - a number that follows the E.164 numbering plan.
• Bearer service - the telecommunications service category being described for transfer of information.
• PSTN - Public Switched Telephone Network, the non-ISDN network with which interworking is required.
• PTNX - Private Telecommunication Network Exchange, one of the private-network user examples named in the service description.
• Supplementary service - an additional service that can alter how this bearer service behaves, such as call hold.
• Retention timer - the network timer that limits how long calling-party information is kept after busy or failure conditions.

Who uses SIST ETS 300 109 E1:2003?

SIST ETS 300 109 E1:2003 is used by public telecommunications operators, ISDN network planners, and equipment designers who need a shared description of this speech bearer service. It is also useful for quality managers and buyers checking how a service is offered, what channels it uses, and how it behaves during call setup, busy conditions, and interworking.

Which standards are used with SIST ETS 300 109 E1:2003?

The standard relies on several CCITT Recommendations for definitions and service description methods:

• I.130 - the three-stage model for describing ISDN services.
• I.411 - reference configurations for ISDN user-network interfaces.
• G.711 - PCM voice coding and the A-law speech encoding used here.
• I.112 - vocabulary for ISDN terms such as ISDN, service, and bearer service.
• I.210 - principles for telecommunications services supported by ISDN.
• I.221 - common specific characteristics, including busy-state terms.
• I.140 - attribute technique used for the static service description.
• I.220 - common dynamic description for basic telecommunication services.
• E.164 - numbering plan for ISDN numbers.

The document also names ETS 300 102 and ETS 300 125 for signalling-related behavior, and Annex A cites Q.71 and ETS 300 110 as informational background.

What does the SIST ETS 300 109 E1:2003 document contain?

SIST ETS 300 109 E1:2003 contains a service description, call procedures, interworking notes, and an attribute-based characterization of the bearer service. Table 1 gives subscription options, Table 2 gives information transfer attributes, and Table 3 gives access attributes.

It also includes normal and exceptional call procedures, intercommunication considerations with the PSTN and private ISDNs, and interaction with supplementary services. Annex A provides a short bibliography for related ISDN service and interface standards.

SLOVENSKI STANDARD
01-december-2003
Digitalno omrežje z integriranimi storitvami (ISDN) – Kategorija nosilne vodovne
storitve za prenosno hitrost 64 kbit/s in strukturirane signale, ki se uporabjajo za
prenos govornih podatkov – Opis storitve
Integrated Services Digital Network (ISDN); Circuit-mode 64 kbit/s 8 kHz structured
bearer service category usable for speech information transfer; Service description
Ta slovenski standard je istoveten z: ETS 300 109 Edition 1
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.

EUROPEAN ETS 300 109
TELECOMMUNICATION August 1992
STANDARD
Source: ETSI TC-NA Reference: DE/NA-012236
ICS: 33.080
ISDN, bearer service, speech
Key words:
Integrated Services Digital Network (ISDN);
Circuit-mode 64 kbit/s structured bearer
service category usable for speech information transfer
Service description
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
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 1992. All rights reserved.
New presentation - see History box

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ETS 300 109: August 1992
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 300 109: August 1992
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions.8
4 Symbols and abbreviations .8
5 Description .9
6 Procedures.9
6.1 Provision and withdrawal .9
6.2 Normal procedures .10
6.2.1 Originating the call (call establishment).10
6.2.2 Indications during call establishment.10
6.2.3 Terminating the call.10
6.3 Exceptional procedures .11
6.3.1 Situations at the calling user side.11
6.3.2 Situations at the called user side.11
6.3.3 Situations due to network conditions.11
6.3.4 Retention of call information.11
7 Intercommunication considerations.11
7.1 Interworking with non-ISDNs .11
7.2 Interworking with private ISDNs.11
8 Interaction with other supplementary services .12
9 Static description of the service using attributes .12
9.1 Low layer attributes.12
9.1.1 Information transfer attributes .12
9.1.2 Access attributes.13
9.2 High layer attributes .13
9.3 General attributes .13
10 Dynamic description.13
Annex A (informative): Bibliography.14
History.15

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ETS 300 109: August 1992
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ETS 300 109: August 1992
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 [1], 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.
This ETS details the stage 1 aspects (overall service description) for the circuit-mode 64 kbit/s 8 kHz
structured bearer service category, usable for speech information transfer. The stage 2 and stage 3
aspects are detailed in a general form in CCITT Recommendation Q.71 (an ETSI version is currently
under development) and ETS 300 102 (1990), respectively.

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ETS 300 109: August 1992
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ETS 300 109: August 1992
1 Scope
This standard defines the stage one of the circuit-mode 64 kbit/s 8 kHz structured bearer service category
usable for speech information transfer for the pan-European Integrated Services Digital Network (ISDN)
as provided by European public telecommunications operators. Stage one is an overall service description
from the user's point of view (see CCITT Recommendation I.130 [1]), but does not deal with the details of
the human interface itself.
This standard defines the interworking requirements of private ISDNs with the public ISDN.
In addition, this standard specifies the base functionality where the service is provided to the user via a
private ISDN.
This standard does not specify the additional requirements where the service is provided to the user via a
telecommunications network that is not an ISDN but does include interworking requirements of other
networks with the public ISDN.
Charging principles are outside the scope of this standard.
The values of the general attributes are outside the scope of this standard.
The circuit-mode 64 kbit/s 8 kHz structured bearer service category usable for speech information transfer
is intended to support speech information transfer between reference points. Each of these reference
points can be either an S or coincident S and T reference points (see CCITT Recommendation I.411 [2]).
NOTE: Network operators can also provide information transfer with the same attributes
where the reference point is T.
The digital signal at the coincident S and T reference point (see CCITT Recommendation I.411 [2])
conforms to CCITT Recommendation G.711 [3] (A-law). The network may use processing techniques
appropriate for speech such as analogue transmission, echo cancellation and low bit rate encoding.
Hence, bit integrity is not assured. This bearer service category is not intended to support modem derived
voice band data.
This standard is applicable to the stage two and stage three standards for the ISDN circuit-mode 64 kbit/s
8 kHz structured bearer service category usable for speech information transfer. The terms "stage two"
and "stage three" are also defined in CCITT Recommendation I.130 [1]. Where the text indicates the
status of a requirement (i.e. as strict command or prohibition, as authorisation leaving freedom, or as a
capability or possibility), this shall be reflected in the text of the relevant stage two and stage three
standards.
Furthermore, conformance to this standard is met by conforming to the stage three standards with the
field of application appropriate to the equipment being implemented. Therefore no method of testing is
provided for this standard.
2 Normative references
This standard incorporates, by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to, or revisions of any of these publications
apply to this standard only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies.
[1] CCITT Recommendation I.130 (1988): "Method for the characterisation of
telecommunication services supported by an ISDN and network capabilities of
an ISDN".
[2] CCITT Recommendation I.411 (1988): "ISDN user-network interfaces -
Reference configurations".
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ETS 300 109: August 1992
[3] CCITT Recommendation G.711 (1988): "Pulse code modulation (PCM) of voice
frequencies".
[4] CCITT Recommendation I.112 (1988): "Vocabulary of terms for ISDNs".
[5] CCITT Recommendation I.210 (1988): "Principles of telecommunications
services supported by an ISDN and the means to describe them".
[6] CCITT Recommendation I.221 (1988): "Common specific characteristics of
services".
[7] CCITT Recommendation I.140 (1988): "Attribute technique for the
characterization of telecommunication services supported by an ISDN and
network capabilities of an ISDN".
[8] CCITT Recommendation I.220 (1988): "Common dynamic description of basic
telecommunication services".
[9] CCITT Recommendation E.164 (1988): "Numbering plan for the ISDN era".
3 Definitions
For the purposes of this standard, the following definitions apply:
Integrated Services Digital Network (ISDN): see CCITT Recommendation I.112 [4], § 2.3, definition
308.
Service; telecommunications service: see CCITT Recommendation I.112 [4], § 2.2, definition 201.
Bearer service: see CCITT Recommendation I.112 [3], § 2.2, definition 202.
ISDN number: a number conforming to the numbering plan and structure specified in CCITT
Recom
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