SIST ETS 300 108 E1:2003

• Abstract:

  DE/NA-012235

• 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 300 108 ed.1 (1992-08) - Integrated Services Digital Network (ISDN); Circuit-mode 64 kbit/s unrestricted 8 kHz structured bearer service category; Service description

SIST ETS 300 108 E1:2003 is the Slovenian version of ETS 300 108 Edition 1. It describes the stage 1 service for the Integrated Services Digital Network (ISDN) circuit-mode 64 kbit/s unrestricted 8 kHz structured bearer service category from the user’s point of view. The standard is aimed at network operators, implementers and planners who need to know how the bearer service behaves, how calls are set up and how it interworks with other networks.

What does SIST ETS 300 108 E1:2003 specify?

SIST ETS 300 108 E1:2003 specifies the stage 1 description of a bearer service category for public ISDNs. It sets out the user-facing service behaviour, the call procedures, interworking expectations and the low-layer attributes used to describe the service.

Annex	What it covers
Annex A	Informative bibliography

The scope focuses on service description, not on human interface detail, charging principles or the values of general attributes. It also covers interworking requirements for private ISDNs with the public ISDN, and it applies to the stage 2 and stage 3 standards that implement this service.

What are the key requirements of SIST ETS 300 108 E1:2003?

The core requirement is unrestricted information transfer over a 64 kbit/s B channel, with signalling on a D channel. In practice, the network is expected to carry user data transparently, while signalling stays separate.

Clause 5 allows the service to support file transfer, multiple subrate streams multiplexed into 64 kbit/s, transparent access to a public data network, speech and 3,1 kHz audio. The standard notes that speech and audio use depends on compatible encoding and on the customer, not on network control of echo or loss.

Clause 5 also distinguishes three service variants: on demand, reserved and permanent. That matters because different provisioning and call-control rules apply depending on whether the connection is set up only when needed or provided continuously.

Clause 6.1 says provision is by prior arrangement with the network operator. It also sets subscription options for the interface, including the maximum number of information channels and the maximum number of total calls present. This is the part a buyer or operator uses when dimensioning access capacity and call limits.

Clauses 6.2 and 6.3 describe the normal and exceptional call procedures. The calling user requests the bearer service with the called ISDN number, the network sends call-progress indications, and once the connection is established the B channel carries 64 kbit/s digital signals in both directions without alteration by the network.

Clause 6.3 covers failure cases such as an improper request, an invalid or incorrect ISDN number, overlap-sending timeouts, busy called users, terminal non-response and congestion. The standard also allows a network option to retain call information for a retention timer, which must be greater than 15 seconds.

Clauses 7 and 8 cover interworking and supplementary services. The standard calls for interworking with non-ISDNs through network interworking functions, and it says that if a supplementary service interrupts in-band communication, the network shall provide an appropriate indication in the B channel.

Clause 9 gives the static attribute description. The service is circuit mode, 64 kbit/s, unrestricted, 8 kHz structured, bidirectional symmetric, and usable in point-to-point or multipoint configurations. It uses B-channel user information and D-channel signalling, and the standard gives no high-layer or general attribute values.

Clause 10 points to the dynamic description for demand service in CCITT Recommendation I.220. For implementers, that means the detailed call state behaviour is defined by the common dynamic description model rather than repeated here.

What terms does SIST ETS 300 108 E1:2003 define?

• Integrated Services Digital Network (ISDN) - The digital network environment in which this bearer service is defined.
• Bearer service - A service that carries user information across the network without defining the user application itself.
• Interworking Function (IWF) - The network function used when ISDN calls connect to non-ISDN networks such as the PSTN.
• Public Switched Telephone Network (PSTN) - The non-ISDN network named in the interworking examples.
• Private Telecommunication Network Exchange (PTNX) - A private network exchange that may appear as a user in point-to-point or multipoint communication.
• Retention timer - The network timer that keeps calling-user information after busy or termination; the standard requires a value greater than 15 seconds.
• Network determined user busy - A busy condition identified by the network during call establishment.
• User determined user busy - A busy condition identified from the user side during call establishment.

Who uses SIST ETS 300 108 E1:2003?

SIST ETS 300 108 E1:2003 is used by European public telecommunications operators, network planners and implementers of ISDN bearer services. It is also relevant to equipment vendors building terminal equipment, interworking functions, private ISDNs and stage 3 signalling implementations.

In practice, operators use it to define provisioning, call handling and interworking behaviour. Manufacturers use it to align service behaviour with the service model that the network must present to users.

Which standards are used with SIST ETS 300 108 E1:2003?

Reference	What it contributes
CCITT Recommendation I.130	The three-stage method for describing telecommunication services
CCITT Recommendation I.411	ISDN user-network reference configurations and reference points
CCITT Recommendation I.112	Core ISDN vocabulary
CCITT Recommendation I.210	Principles for describing ISDN services
CCITT Recommendation E.164	The ISDN numbering plan
CCITT Recommendation I.221	Common specific characteristics of services and busy-state terms
CCITT Recommendation I.220	Dynamic description of basic telecommunication services
CCITT Recommendation I.140	The attribute technique used for service characterization
ETS 300 007	Support of packet mode terminal equipment by an ISDN
ETS 300 103	Support of X.21, X.21 bis and X.20 bis based DTEs
ETS 300 125	Data link layer specification used for signalling
ETS 300 102	User-network interface layer 3 specifications and stage 3 context
CCITT Recommendation I.520	Interworking between ISDNs
CCITT Recommendation Q.71	ISDN 64 kbit/s circuit mode switched bearer services

What does the SIST ETS 300 108 E1:2003 document contain?

The document contains the service scope, normative references, definitions and abbreviations, followed by a service description and detailed procedures. It then covers intercommunication, interaction with supplementary services, static attribute tables and a dynamic description reference.

Table 1 sets out subscription options for the interface. Table 2 lists the low-layer information transfer attributes, and Table 3 lists the access attributes and signalling references. Annex A provides a bibliography for background reading and related standards.

SLOVENSKI STANDARD
01-december-2003
Digitalno omrežje z integriranimi storitvami (ISDN) – Kategorija nosilne vodovne
storitve za prenosno hitrost 64 kbit/s brez omejitve in 8 kHz za strukturirane
signale – Opis storitve
Integrated Services Digital Network (ISDN); Circuit-mode 64 kbit/s unrestricted 8 kHz
structured bearer service category; Service description
Ta slovenski standard je istoveten z: ETS 300 108 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 300 108
TELECOMMUNICATION August 1992
STANDARD
Source: ETSI TC-NA Reference: DE/NA-012235
ICS: 33.080
ISDN, bearer service
Key words:
Integrated Services Digital Network (ISDN);
Circuit-mode 64 kbit/s unrestricted 8 kHz
structured bearer service category
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 300 108: 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 300 108: August 1992
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions.8
4 Symbols and abbreviations .9
5 Description .9
6 Procedures.10
6.1 Provision and withdrawal .10
6.2 Normal procedures .10
6.2.1 Originating the call (call establishment).11
6.2.2 Indications during call establishment.11
6.2.3 Terminating the call.11
6.3 Exceptional procedures .11
6.3.1 Situations at the calling user side.11
6.3.2 Situations at the called user side.12
6.3.3 Situations due to network conditions.12
6.3.4 Retention of call information.12
7 Intercommunication considerations.12
7.1 Interworking with non-ISDNs .12
7.2 Interworking with private ISDNs.13
8 Interaction with supplementary services .13
9 Static description of the service using attributes .13
9.1 Low layer attributes.13
9.1.1 Information transfer attributes .13
9.1.2 Access attributes.14
9.2 High layer attributes .14
9.3 General attributes .14
10 Dynamic description.14
Annex A (informative): Bibliography.15
History.16

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ETS 300 108: 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
unrestricted 8 kHz structured bearer service category. The stage 2 and stage 3 aspects are detailed in a
general form in CCITT Recommendation Q.71 (an ETSI version is under development) and
ETS 300 102 (1990), respectively.

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ETS 300 108: August 1992
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ETS 300 108: August 1992
1 Scope
This standard defines the stage one of the circuit-mode 64 kbit/s unrestricted 8 kHz structured bearer
service category 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 unrestricted 8 kHz structured bearer service category provides unrestricted
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.
This standard is applicable to the stage two and stage three standards for the ISDN circuit-mode 64 kbit/s
unrestricted 8 kHz structured bearer service category. 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".
[3] CCITT Recommendation I.112 (1988): "Vocabulary of terms for ISDNs".

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ETS 300 108: August 1992
[4] CCITT Recommendation I.210 (1988): "Principles of telecommunication
services supported by an ISDN and the means to describe them".
[5] CCITT Recommendation E.164 (1988): "Numbering plan for the ISDN era".
[6] CCITT Recommendation I.221 (1988): "Common specific characteristics of
services".
[7] CCITT Recommendation I.220 (1988): "Common dynamic description of basic
telecommunication services".
[8] CCITT Recommendation I.140 (1988): "Attribute technique for the
characterization of telecommunication services supported by an ISDN and
network capabilities of an ISDN".
[9] ETS 300 007 (1991): "Integrated Services Digital Network (ISDN); Support of
packet mode terminal equipment by an ISDN".
[10] ETS 300 103 (1990): "Integrated Services Digital Network (ISDN); Support of
CCITT Recommendation X.21, X.21 bis and X.20 bis based Data Terminal
Equipments (DTEs) by an ISDN Synchronous and asynchronous terminal
adaptation functions".
3 Definitions
For the purposes of this standard, the following definitions apply:
Integrated Services Digital Network (ISDN): see CCITT Recommendation I.112 [3], § 2.3, definition
308.
Service; telecommunications service: see CCITT Recommendation I.112 [3], § 2.2, definition 201.
Bearer service: see CCITT Recommendation I.112 [3], § 2.2, definition 202.
Supplementary service: see CCITT Recommendation I.210 [4], § 2.4.
ISDN number: a number conforming to the numbering plan and structure specified in CCITT
Recommendation E.164 [5].
Network determined user busy: see CCITT Recommendation I.221 [6], § 3.1.4.
User determined user busy: see CCITT Recommendation I.221 [6], § 3.1.4.
Retention timer: this timer specifies the amount of time that the network retains all of the information
supplied by the calling user when the call encounters busy or is terminated. Implementation of this timer is
a network option. The value of this timer shall be greater than 15 seconds.

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ETS 300 108: August 1992
4 Symbols and abbreviations
ISDN Integrated Services Digital Network
IWF Interworking Function
PSTN Public Switched Telephone Network
PTNX Private Telecommunication Network Exchange
5 Description
This bearer service category shall provide unrestricted information transfer, therefore it can be used to
support various user a
...