SIST ETS 300 147 E1:2003

• Abstract:

  Equivalent to the parts of G.707, 708 and 709 relevant to ETSI

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.040.20 - Transmission systems
• 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 300 147 ed.1 (1992-03) - Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); Multiplexing structure

SIST ETS 300 147 E1:2003 is the SIST edition of an ETSI European Telecommunication Standard for Transmission and Multiplexing (TM) in Synchronous Digital Hierarchy (SDH) networks. It specifies the hierarchical bit rates, multiplexing structure and mapping schemes used in SDH transmission networks, so that equipment and interfaces can work together across vendors and operators. The standard is based on CCITT Recommendations G.707, G.708 and G.709.

What does SIST ETS 300 147 E1:2003 specify?

SIST ETS 300 147 E1:2003 specifies the SDH bit rates, the basic multiplexing structure, and the mapping methods used in transmission networks based on SDH. It also sets out how the document’s requirements are organized and how the SDH multiplexing diagrams are to be read.

The document is organized into a foreword, scope, normative references, definitions and abbreviations, hierarchical bit rates, basic multiplexing structure, and multiplexing method and mapping, followed by history. Clause 5 presents the basic structure in Figure 1, and Clause 6 uses Table 1 to mark items as normative or not relevant.

The standard is not an equipment specification. In practice, that means a product does not have to implement every listed function, but any function it does implement shall follow the ETS requirements.

What are the key requirements of SIST ETS 300 147 E1:2003?

SIST ETS 300 147 E1:2003 builds the SDH multiplexing hierarchy around G.707 bit rates, the structure in Figure 1, and the multiplexing and mapping rules taken from G.709 with stated modifications. The practical task for an engineer is to match rates, containers, pointers, and mappings exactly to the SDH hierarchy used by the network.

• Clause 4 - hierarchical bit rates: the SDH transmission network shall use the hierarchical bit rates of CCITT Recommendation G.707. This matters when planning interfaces or checking whether a line signal fits the SDH hierarchy.
• Clause 5 - basic multiplexing structure: the SDH multiplexing structure shall follow Figure 1, which is a subset of the G.709 structure. The note on bit order matters when reading diagrams and interpreting byte and bit positions.
• Clause 6 - multiplexing method and mapping: multiplexing and mapping come from G.709 together with the ETS modifications in Table 1. Table 1 shows which items are normative, so implementers know what is required for compliance when a function is used.
• AUG, AU-4, TU-3, TU-2 and TU-1 mapping: the standard covers multiplexing of AUGs into STM-N, AU-4s via AUG, TUG-3s into VC-4, TU-3s via TUG-3, TUG-2s via TUG-3, and TU-2s and TU-1s via TUG-2. This is the core SDH hierarchy that equipment must align to when building payload structure.
• Maintenance signals and timing recovery: Clause 6 includes section maintenance signals, path maintenance signals, and timing recovery. In practice, these functions are part of keeping the SDH network aligned and monitored.
• Pointer processing: the standard covers AU pointer, TU-3 pointer, and TU-1/TU-2 pointer location, value, frequency justification, New Data Flag, generation and interpretation, plus AU-4 concatenation and TU concatenation items. These rules are what let receivers find payloads correctly when timing shifts.
• Path Overhead and tributary mapping: Clause 6 includes VC-3/VC-4 POH, VC-1/VC-2 POH, mapping of tributaries into VC-4, VC-3, VC-12 and VC-11, VC-11 to VC-12 conversion, floating and locked mode conversion, and mapping of ATM cells. This is the part used when assigning real traffic signals to SDH virtual containers.

What terms does SIST ETS 300 147 E1:2003 define?

SIST ETS 300 147 E1:2003 uses the definitions from CCITT Recommendation G.708, and Clause 3 lists the abbreviations used throughout the document.

• ATM - Asynchronous Transfer Mode, a signal type that the multiplexing structure can accommodate.
• AU - Administrative Unit, a SDH payload element carried toward STM-N.
• AUG - Administrative Unit Group, the grouped form of AUs used in the higher-order multiplexing path.
• POH - Path Overhead, the overhead associated with a virtual container path.
• SDH - Synchronous Digital Hierarchy, the transmission hierarchy covered by the standard.
• STM-N - Synchronous Transport Module-N, the SDH transport signal at hierarchical level N.
• TU - Tributary Unit, a lower-order SDH payload element used in multiplexing.
• VC - Virtual Container, the container that carries mapped tributary signals in SDH.

Who uses SIST ETS 300 147 E1:2003?

SIST ETS 300 147 E1:2003 is used by SDH equipment vendors, network operators, and transmission engineers who need common rules for multiplexing, mapping, and pointer processing. The foreword says the ETS was produced to provide inter-vendor and inter-operator compatibility.

It is also relevant to test laboratories, system integrators, and quality or procurement teams that need to check whether an SDH product or interface follows the expected hierarchy. In practice, they use it to specify interfaces, verify mappings, and confirm that implemented functions follow the ETS when present.

What changed in SIST ETS 300 147 E1:2003 from the previous edition?

SIST ETS 300 147 E1:2003 corresponds to ETS 300 147 Edition 1, first published in March 1992. The history also notes a later presentation update and a PDF conversion in March 1996.

Which standards are used with SIST ETS 300 147 E1:2003?

SIST ETS 300 147 E1:2003 relies on three normative CCITT Recommendations.

• CCITT Recommendation G.707 - provides the SDH hierarchical bit rates used by Clause 4.
• CCITT Recommendation G.708 - provides the definitions used in Clause 3 and the network node interface background.
• CCITT Recommendation G.709 - provides the SDH synchronous multiplexing structure and the base mapping method that Clause 6 modifies and refines.

What does the SIST ETS 300 147 E1:2003 document contain?

SIST ETS 300 147 E1:2003 contains a foreword, scope, normative references, definitions and abbreviations, hierarchical bit rates, basic multiplexing structure, and multiplexing method and mapping. It also includes Figure 1 for the multiplexing structure and Table 1, which marks parts of G.709 as normative or not relevant for this ETS.

The document gives the structure needed to relate containers, virtual containers, tributary units, administrative units, pointers and Path Overhead. That makes it useful for design work, interoperability checks, and test planning for SDH transmission networks.

Its mapping sections cover higher-order and lower-order tributary mappings, including ATM cells. The result is a practical guide to how SDH signals are arranged and carried through the hierarchy.

SLOVENSKI STANDARD
01-december-2003
Prenos in multipleksiranje (TM) – Sinhrona digitalna hierarhija (SDH) – Struktura
multipleksiranja
Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); Multiplexing
structure
Ta slovenski standard je istoveten z: ETS 300 147 Edition 1
ICS:
33.040.20 Prenosni sistem Transmission systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 147
TELECOMMUNICATION March 1992
STANDARD
Source: ETSI TC-TM Reference: DE/TM-3001
ICS: 33.080
Transmission, Multiplexing
Key words:
Transmission and Multiplexing (TM);
Synchronous Digital Hierarchy (SDH)
Multiplexing structure
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

Page 2
ETS 300 147: March 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.

Page 3
ETS 300 147: March 1992
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .7
3.1 Definitions .7
3.2 Abbreviations .7
4 Hierarchical bit rates.8
5 Basic multiplexing structure .8
6 Multiplexing method and mapping.8
History.12

Page 4
ETS 300 147: March 1992
Blank page
Page 5
ETS 300 147: March 1992
Foreword
This European Telecommunication Standard (ETS) has been produced by the Transmission and
Multiplexing (TM) Technical Committee of the European Telecommunication Standards Institute (ETSI).
This ETS provides inter-vendor and inter-operator compatibility and is based on CCITT
Recommendations G.707 [1], G.708 [2] and G.709 [3].

Page 6
ETS 300 147: March 1992
Blank page
Page 7
ETS 300 147: March 1992
1 Scope
This European Telecommunication Standard (ETS) specifies the hierarchical bit rates, the multiplexing
structure and the mapping schemes to be used in the transmission networks based on Synchronous
Digital Hierarchy (SDH).
2 Normative references
This ETS 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 ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] CCITT Recommendation G.707 (1990): "Synchronous Digital Hierarchy bit
rates."
[2] CCITT Recommendation G.708 (1990): "Network Node Interface for the
Synchronous Digital Hierarchy."
[3] CCITT Recommendation G.709 (1990): "Synchronous multiplexing structure."
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS the definitions given in CCITT Recommendation G.708 [2] apply.
3.2 Abbreviations
For the purposes of this ETS the following abbreviations apply.
ATM Asynchronous Transfer Mode
AU Administrative Unit
AUG Administrative Unit Group
C Container
CCITT International Telegraph and Telephone Consultative Committee
ETS European Telecommunication Standard
ETSI European Telecommunications Standards Institute
POH Path Overhead
SDH Synchronous Digital Hierarchy
STM-N Synchronous Transport Module-N
TU Tributary Unit
TUG Tributary Unit Group
VC Virtual Container
Page 8
ETS 300 147: March 1992
4 Hierarchical bit rates
The hierarchical bit rates used in the SDH transmission network shall be in accorda
...