SIST EN 300 462-6-2 V1.1.1:2003
(Main)Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 6-2: Timing characteristics of primary reference clocks; Implementation Conformance Statement (ICS) proforma specification
General Information
- Abstract
Stadardises SDH timing distribution architectures, synchronisation network level jitter and wander requirements, slave clock timing specifications and primary reference clock specifications.
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
Overview
SIST EN 300 462-6-2 V1.1.1:2003 specifies standardized requirements for synchronization networks in telecommunication systems, with a focus on the timing characteristics of primary reference clocks (PRCs). This European standard, adopted by the Slovenian Institute for Standardization (SIST), provides the Implementation Conformance Statement (ICS) proforma, which is used for declaring and assessing conformity to the timing requirements set out in EN 300 462-6-1.
Synchronization and accurate timing are critical for digital networks, particularly those employing Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) transmission technologies. The ICS proforma enables equipment manufacturers, suppliers, and operators to verify and document the conformance of PRC implementations to the network synchronization standards.
Key Topics
- Synchronization Network Architecture: Definition and description of SDH timing distribution architectures, ensuring synchronization throughout large-scale telecom networks.
- Primary Reference Clock (PRC) Specifications: Requirements for the PRC, which acts as the master timing source, including output interface support, frequency accuracy, phase continuity, and noise generation.
- Jitter and Wander Control: Standardized limits on network-level jitter (short-term variations) and wander (long-term variations) in synchronization signals to guarantee error-free data transmission.
- ICS Proforma Structure: Guidance on completing the Implementation Conformance Statement, including clear definitions, completion instructions, and conformity criteria for manufacturers and test laboratories.
- Switching and Degradation Handling: Requirements to ensure that clocks switch over to undegraded oscillators before critical timing deviation thresholds are exceeded.
Applications
SIST EN 300 462-6-2 V1.1.1:2003 is widely used in:
- Telecommunications Equipment Design: Supporting manufacturers in developing and certifying SDH and PDH-compatible synchronization equipment.
- Network Operations: Assisting telecom operators in evaluating, procuring, and maintaining equipment that guarantees network-wide synchronization integrity.
- Conformance Testing: Providing laboratories and test houses with a standardized ICS proforma, enabling consistent and repeatable evaluation of primary reference clock timing performance.
- Procurement and Compliance: Supporting procurement processes by requiring suppliers to declare conformity to established timing and synchronization standards as per the ICS.
Typical equipment covered includes master clocks, network synchronization supplies, and devices integrated within digital transmission systems that must meet stringent accuracy and stability requirements.
Related Standards
To ensure interoperability and comprehensive synchronization management within digital networks, this standard is closely related to other parts of the EN 300 462 series, including:
- EN 300 462-1-1: Definitions and terminology for synchronization networks
- EN 300 462-2-1: Synchronization network architecture
- EN 300 462-3-1: Control of jitter and wander within synchronization networks
- EN 300 462-4-1/4-2: Timing characteristics and ICS for slave clocks in SDH and PDH equipment
- EN 300 462-5-1: Timing for slave clocks in SDH equipment
- EN 300 462-6-1: Timing characteristics of primary reference clocks (detailed technical requirements)
- ISO/IEC 9646 series: Methods and guidelines for conformance testing and ICS documentation
By adhering to SIST EN 300 462-6-2 V1.1.1:2003 and its related standards, organizations help ensure reliable network synchronization, minimized transmission errors, and improved service quality in digital telecommunications infrastructures.
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Frequently Asked Questions
SIST EN 300 462-6-2 V1.1.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 6-2: Timing characteristics of primary reference clocks; Implementation Conformance Statement (ICS) proforma specification". This standard covers: Stadardises SDH timing distribution architectures, synchronisation network level jitter and wander requirements, slave clock timing specifications and primary reference clock specifications.
Stadardises SDH timing distribution architectures, synchronisation network level jitter and wander requirements, slave clock timing specifications and primary reference clock specifications.
SIST EN 300 462-6-2 V1.1.1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.040.20 - Transmission systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 462-6-2 V1.1.1:2003 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-december-2003
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Transmission and Multiplexing (TM); Generic requirements for synchronization networks;
Part 6-2: Timing characteristics of primary reference clocks; Implementation
Conformance Statement (ICS) proforma specification
Ta slovenski standard je istoveten z: EN 300 462-6-2 Version 1.1.1
ICS:
33.040.20 Prenosni sistem Transmission systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
European Standard (Telecommunications series)
Transmission and Multiplexing (TM);
Generic requirements for synchronization networks;
Part 6-2: Timing characteristics of primary reference clocks;
Implementation Conformance Statement (ICS)
proforma specification
2 ETSI EN 300 462-6-2 V1.1.1 (2000-03)
Reference
DEN/TM-01057-6-2
Keywords
ICS, SDH, synchronization, transmission,
performance
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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 2000.
All rights reserved.
ETSI
3 ETSI EN 300 462-6-2 V1.1.1 (2000-03)
Contents
Intellectual Property Rights.4
Foreword .4
Introduction .5
1 Scope.6
2 References.6
3 Definitions and abbreviations .7
3.1 Definitions.7
3.2 Abbreviations.7
4 Conformance to this ICS proforma specification.7
Annex A (normative): ICS proforma guidance.8
A.1 Guidance for completing the ICS proforma.8
A.1.1 Purposes and structure.8
A.1.2 Abbreviations and conventions.8
A.1.3 Instructions for completing the ICS proforma .10
Annex B (normative): ICS proforma for EN 300 462-6-1, Timing characteristics of primary
reference clocks.11
B.1 Identification of the implementation.11
B.1.1 Date of the statement .11
B.1.2 Implementation Under Test (IUT) identification.11
B.1.3 System Under Test (SUT) identification (if appropriate).11
B.1.4 Product supplier.12
B.2 Identification of the EN.12
B.3 Global statement of conformance .12
B.4 PRC description .13
B.4.1 PRC interface description.13
B.5 PRC frequency accuracy.13
B.6 PRC output noise generation.13
B.7 PRC phase discontinuity .14
B.8 PRC performance degradation limits.14
History.15
ETSI
4 ETSI EN 300 462-6-2 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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Transmission
and Multiplexing (TM).
The present document has been produced to provide requirements for synchronization networks that are compatible with
the performance requirements of digital networks.
The present document is part 6, sub-part 2 of a multi-part EN covering Transmission and Multiplexing (TM); Generic
requirements for synchronization networks, as identified below:
Part 1-1: "Definitions and terminology for synchronization networks";
Part 2-1: "Synchronization network architecture";
Part 3-1: "The control of jitter and wander within synchronization networks";
Part 4-1: "Timing characteristics of slave clocks suitable for synchronization supply to Synchronous Digital
Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) equipment";
Part 4-2: "Timing characteristics of slave clocks suitable for synchronization supply to Synchronous Digital
Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) equipment; Implementation
Conformance Statement (ICS) proforma specification";
Part 5-1: "Timing characteristics of slave clocks suitable for operation in Synchronous Digital Hierarchy
(SDH) equipment";
Part 6-1: "Timing characteristics of primary reference clocks";
Part 6-2: "Timing characteristics of primary reference clocks; Implementation Conformance
Statement (ICS) proforma specification";
Part 7-1: "Timing characteristics of slave clocks suitable for synchronization supply to equipment in local
node applications".
National transposition dates
Date of adoption of this EN: 25 February 2000
Date of latest announcement of this EN (doa): 31 May 2000
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 November 2000
Date of withdrawal of any conflicting National Standard (dow): 30 November 2000
ETSI
5 ETSI EN 300 462-6-2 V1.1.1 (2000-03)
Introduction
To evaluate conformance of a particular implementation, it is necessary to have a statement of which capabilities and
options have been implemented for a telecommunication specification. Such a statement is called an Implementation
Conformance Statement (ICS).
The ICS proforma is not another complete description of the related specification, but rather a compact form of its static
conformance requirements, to be used by the test laboratory to identify which test shall be performed on a given
implementation. Not every feature of a profile specification is contained in the related ICS proforma. For particular
cases requiring specific information the ICS can refer to the appropriate clause of the related specification by means of
references, notes and or comments.
ETSI
6 ETSI EN 300 462-6-2 V1.1.1 (2000-03)
1 Scope
The present document provides the Implementation Conformance Statement (ICS) proforma specification for the
synchronization network generic requirements defined in EN 300 462-6-1 [6] in compliance with the relevant
requirements, and in accordance with the relevant guidance given in ISO/IEC 9646-7 [9] and ETS 300 406 [7].
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] ETSI EN 300 462-1-1: "Transmission and Multiplexing (TM); Generic requirements for
synchronization networks; Part 1-1: Definitions and terminology for synchronization networks".
[2] ETSI EN 300 462-2-1: "Transmission and Multiplexing (TM); Generic requirements for
synchronization networks; Part 2-1: Synchronization network architecture".
[3] ETSI EN 300 462-3-1: "Transmission and Multiplexing (TM); Generic requirements for
synchronization networks; Part 3-1: The control of jitter and wander within synchronization
networks".
[4] ETSI EN 300 462-4-1: "Transmission and Multiplexing (TM); Generic requirements for
synchronization networks; Part 4-1: Timing characteristics of slave clocks suitable for
synchronization supply to Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital
Hierarchy (PDH) equipment".
[5] ETSI EN 300 462-5-1: "Transmission and Multiplexing (TM); Generic requirements for
synchronization networks; Part 5-1: Timing characteristics of slave clocks suitable for operation in
Synchronous Digital Hierarchy (SDH) equipment".
[6] ETSI EN 300 462-6-1: "Transmission and Multiplexing (TM); Generic requirements for
synchronization networks; Part 6-1: Timing characteristics of primary reference clocks".
[7] ETSI ETS 300 406 (Ed.1): "Methods for Testing and Specification (MTS); Protocol and profile
conformance testing specifications; Standardization methodology".
[8] ISO/IEC 9646-1 (1994): "Information technology; Open Systems Interconnection; Conformance
testing methodology and framework; Part 1: General concepts".
[9] ISO/IEC 9646-7 (1995): "Information technology; Open Systems Interconnection; Conformance
testing methodology and framework; Part 7: Implementation Conformance Statements ".
[10] ETSI ETS 300 019: "Equipment Engineering (EE); Environmental conditions and environmental
tests for telecommunications equipment".
ETSI
7 ETSI EN 300 462-6-2 V1.1.1 (2000-03)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Terms defined in:
- EN 300 462-1-1 [1]; EN 300 462-2-1 [2]; EN 300 462-3-1 [3]; EN 300 462-4-1 [4]; EN 300 462-5-1 [5] and in
EN 300 462-6-1 [6];
- ISO/IEC 9646-1 [8] and in ISO/IEC 9646-7 [9].
In particular, the following terms defined in ISO/IEC 9646-1 [8] apply:
Implementation Conformance Statement (ICS): statement made by the supplier of an implementation or system
claimed to conform to a given specification, stating which capabilities have been implemented. The ICS can take several
forms: protocol ICS, profile ICS, profile specific ICS, information object ICS, etc.
ICS proforma: document, in the form of a questionnaire, which when completed for an implementation or system
becomes an ICS.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ICS Implementation Conformance Statement
IUT Implementation Under Test
MTIE Maximum Time Interval Error
PDH Plesiochronous Digital Hierarchy
PRC Primary Reference Clock
SCS System Conformance Statement
SDH Synchronous Digital Hierarchy
SUT System Under Test
TDEV Time DEViation
UI Unit Interval
UIpp Unit Interval peak to peak
UTC Universal Time Coordinated
A full list of abbreviations used in timing and synchronization is listed in EN 300 462-1-1 [1].
4 Conformance to this ICS proforma specification
If it claims to conform to the present document, the actual ICS proforma to be filled in by a supplier shall be technically
equivalent to the text of the ICS proforma given in annex A, and shall preserve the numbering/naming and ordering of
the proforma items.
An ICS which conforms to the present document shall be a conforming ICS proforma completed in accordance with the
guidance for completion given i
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