SIST EN 300 122-1 V1.2.4:2005
(Main)Integrated Services Digital Network (ISDN); Generic keypad protocol for the support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification
General Information
- Abstract
Update references from ETS 300 102-1 and associated I-ETSs to ETS 300 403.
- Status
- Published
- Publication Date
- 31-Mar-2005
- Withdrawal Date
- 30-Sep-2003
- Technical Committee
- SPN - Services and Protocols for Networks
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Apr-2005
- Due Date
- 01-Apr-2005
- Completion Date
- 01-Apr-2005
Overview
SIST EN 300 122-1 V1.2.4:2005 specifies the protocol for the generic keypad on the Integrated Services Digital Network (ISDN), focusing on the support of supplementary services using the Digital Subscriber Signalling System No. one (DSS1). This standard, identical to EN 300 122-1 version 1.2.4, details the necessary specifications for transferring keypad facility codes from user equipment to the network at key access points, specifically the T or coincident S/T reference points defined in ISDN architecture.
By updating references from previous fundamental standards (notably ETS 300 102-1 and associated I-ETSs) to ETS 300 403, this document ensures ongoing compatibility with current ISDN basic call control protocols and enhances the reliability and interoperability of ISDN supplementary service signaling.
Keywords: ISDN, DSS1, generic keypad protocol, supplementary services, digital subscriber signaling, protocol specification, EN 300 403.
Key Topics
Generic Keypad Protocol:
Defines how keypad facility codes are transmitted from user equipment to the network, enabling initiation and control of ISDN supplementary services.Support for Supplementary Services:
The protocol is focused on the invocation of supplementary services (such as call forwarding or call waiting) in the user-to-network direction, independent of active calls.Protocol Applicability:
The protocol is applicable to both basic and primary rate ISDN access, and is intended for equipment connected at ISDN T or S/T reference points.Stimulus Protocol Nature:
The keypad protocol operates as a "stimulus protocol" - no detailed service knowledge is required from user devices, simplifying terminal implementations.Co-existence with Functional Protocols:
Networks may support both keypad (stimulus) and functional protocols. The selection of protocol for supplementary service invocation is both a network and user option.Updated References:
The document redirects all protocol references to the updated EN 300 403-1 for basic call signaling and related normative documents, ensuring alignment with the latest ISDN standards.
Applications
SIST EN 300 122-1 V1.2.4:2005 is essential for:
Telecommunications Operators:
To ensure network compatibility and standardized subscriber signaling for supplementary service support across pan-European ISDN networks.ISDN User Equipment Manufacturers:
For designing telephones, terminal adapters, and other equipment compliant with the ISDN DSS1 keypad protocol, supporting broad network interoperability.Service Providers:
To inform users about available supplementary services and the protocols supported during service subscription or network equipment upgrades.System Integrators:
In projects involving the deployment and integration of ISDN infrastructure where supplementary services are a requirement.
Related Standards
Organizations implementing this standard should also refer to the following documents for comprehensive ISDN protocol compliance and supplementary service support:
- EN 300 403-1: Integrated Services Digital Network (ISDN); DSS1; Signalling network layer for circuit-mode basic call control.
- ITU-T Recommendation Q.931: ISDN user-network interface layer 3 specification for basic call control.
- ITU-T Recommendation Q.932: Generic procedures for the control of ISDN supplementary services.
- EN 300 196-1: ISDN; Generic functional protocol for supplementary services; DSS1 protocol specification.
- CCITT Recommendation I.411: ISDN user-network interfaces - Reference configurations.
- CCITT Recommendation I.210: Principles of telecommunication services supported by ISDN.
- CCITT Recommendation I.112: Terms and vocabulary for ISDN.
Adherence to these related standards ensures interoperability, futureproofing, and robust support for ISDN supplementary services leveraging the DSS1 keypad protocol.
SIST EN 300 122-1 V1.2.4:2005 thus serves as a foundational document for modern ISDN signaling environments, streamlining the deployment and operation of digital supplementary services in public telecommunications networks.
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Frequently Asked Questions
SIST EN 300 122-1 V1.2.4:2005 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Integrated Services Digital Network (ISDN); Generic keypad protocol for the support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification". This standard covers: Update references from ETS 300 102-1 and associated I-ETSs to ETS 300 403.
Update references from ETS 300 102-1 and associated I-ETSs to ETS 300 403.
SIST EN 300 122-1 V1.2.4:2005 is classified under the following ICS (International Classification for Standards) categories: 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 122-1 V1.2.4:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2005
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Integrated Services Digital Network (ISDN); Generic keypad protocol for the support of
supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification
Ta slovenski standard je istoveten z: EN 300 122-1 Version 1.2.4
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.
EN 300 122-1 V1.2.4 (1998-06)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Generic keypad protocol for the support of
supplementary services;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification
2 EN 300 122-1 V1.2.4 (1998-06)
Reference
REN/SPS-05145-Y-1 (14o90iqo.PDF)
Keywords
ISDN, generic, keypad, DSS1, supplementary
service
ETSI
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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 1998.
All rights reserved.
ETSI
3 EN 300 122-1 V1.2.4 (1998-06)
Contents
Intellectual Property Rights.4
Foreword .4
1 Scope.5
2 Normative references .5
3 Definitions.6
4 Abbreviations.6
5 Co-existence with other supplementary service protocols.6
5.1 Support of the various generic protocols . 6
5.2 Coexistence of generic protocols . 6
5.3 Arrangements by which coexistence of protocols may be supported by a network . 7
6 Procedures for the keypad protocol .7
7 Coding requirements .7
Annex A (informative): Example use of the keypad protocol .8
Annex B (informative): Functional reference model for the operation of supplementary
services.9
Annex C (informative): Changes with respect to the previous ETS 300 122-1 .10
History.11
ETSI
4 EN 300 122-1 V1.2.4 (1998-06)
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 free of charge from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (http://www.etsi.fr/ipr or 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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Signalling
Protocols and Switching (SPS).
The present document is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No. one
(DSS1) protocol specification for the Integrated Services Digital Network (ISDN) generic keypad protocol for the
support of supplementary services, as described below:
Part 1: "Protocol specification";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification".
The present version updates the references to the basic call specifications.
National transposition dates
Date of adoption of this EN: 19 June 1998
Date of latest announcement of this EN (doa): 30 September 1998
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 1999
Date of withdrawal of any conflicting National Standard (dow): 31 March 1999
ETSI
5 EN 300 122-1 V1.2.4 (1998-06)
1 Scope
This first part of EN 300 122 specifies the keypad protocol of the pan-European Integrated Services Digital Network
(ISDN) as provided by European public telecommunications operators for the application to a range of supplementary
services at the T reference point, or coincident S and T reference point (as defined in CCITT Recommendation
I.411 [1]), by means of the Digital Subscriber Signalling System No. one (DSS1).
The application of the present document to individual supplementary services is outside the scope of the present
document.
The keypad protocol provides a means of transferring keypad facility codes from the user to the network to control
supplementary services and indicating network responses to the user.
This protocol applies to supplementary service invocation in the user-to-network direction, and the keypad facility codes
used for the invocation of individual supplementary services are network dependent.
The protocol is stimulus in the sense that it does not require any knowledge about the invoked supplementary service by
the user equipment. It is applicable to both the basic and primary rate access structures.
Further parts of the present document may specify the method of testing required to identify conformance to the present
document.
The present document is applicable to equipment, supporting supplementary services using the keypad protocol, to be
attached at either side of a T reference point or coincident S and T reference point when used as an access to the public
ISDN.
2 Normative references
References may be made to:
a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in
which case, subsequent revisions to the referenced document do not apply; or
b) all versions up to and including the identified version (identified by "up to and including" before the version
identity); or
c) all versions subsequent to and including the identified version (identified by "onwards" following the version
identity); or
d) publicatio
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