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ITU-T G.783

Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks

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Organization: ITU-T
Publication Date: 1 March 2006
Status: active
Page Count: 8
scope:

This Recommendation defines a library of basic building blocks and a set of rules by which they may be combined in order to describe a digital transmission equipment. The library comprises the functional building blocks needed to specify completely the generic functional structure of the Synchronous Digital Hierarchy. These building blocks are illustrated in Figure 1-1. In order to be compliant with this Recommendation, equipment needs to be describable as an interconnection of a subset of these functional blocks contained within this Recommendation. The interconnections of these blocks should obey the combination rules given.

This Recommendation defines both the components and the methodology that should be used in order to specify SDH processing; it does not define an individual SDH equipment as such.

The specification method is based on functional decomposition of the equipment into atomic and compound functions. The equipment is then described by its Equipment Functional Specification (EFS) which lists the constituent atomic and compound functions, their interconnection, and any overall performance objectives (e.g., transfer delay, availability, etc.).

The internal structure of the implementation of this functionality (equipment design) need not be identical to the structure of the functional model, as long as all the details of the externally observable behavior comply with the EFS.

The equipment functionality is consistent with the SDH multiplexing structure given in ITU-T Rec. G.707/Y.1322.

Equipment developed prior to the production of this version of the Recommendation may not comply in all details with this Recommendation.

Equipment which is normally stated to be compliant with this Recommendation may not fulfil all the requirements where it is interworking with old equipment that is not compliant with this Recommendation.

Document History

January 1, 2015
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks Corrigendum 1
A description is not available for this item.
August 1, 2013
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks Amendment 4: Text additions to add the required OSM256.4/RSn_A adaptation function for OSM256.4 interface support
A description is not available for this item.
March 1, 2010
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks Amendment 2: Support for optical modules transporting 40 Gigabit/s signals via a multilane interface
A description is not available for this item.
May 1, 2008
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks Amendment 1
A description is not available for this item.
November 13, 2006
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
A description is not available for this item.
ITU-T G.783
March 1, 2006
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
This Recommendation defines a library of basic building blocks and a set of rules by which they may be combined in order to describe a digital transmission equipment. The library comprises the...
March 1, 2006
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
This Recommendation defines a library of basic building blocks and a set of rules by which they may be combined in order to describe a digital transmission equipment. The library comprises the...
June 1, 2004
Characteristics of Synchronous Digital Hierarchy (SDH) Equipment Functional Blocks Series G: Transmission Systems and Media, Digital Systems and Networks Digital Terminal Equipments - Principal Characteristics of Multiplexing Equipment for the Synchronous Digital Hierarchy
A description is not available for this item.
February 1, 2004
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Principal characteristics of multiplexing equipment for the synchronous digital hierarchy
A description is not available for this item.
March 1, 2003
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks Corrigendum 2 SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Principal characteristics of multiplexing equipment for the synchronous digital hierarchy
A description is not available for this item.
June 1, 2002
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Principal characteristics of multiplexing equipment for the synchronous digital hierarchy
A description is not available for this item.
March 1, 2001
Pre-published Characteristics of Synchronous Digital Hierarchy (SDH) Equipment Functional Blocks Series G: Transmission Systems and Media, Digital Systems and Networks Digital Terminal Equipments - Principal Characteristics of Multiplexing Equipment for the Synchronous Digital Hierarchy
A description is not available for this item.
October 1, 2000
Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Principal characteristics of multiplexing equipment for the synchronous digital hierarchy
A description is not available for this item.
April 1, 1997
Characteristics of Synchronous Digital Hierarchy (SDH) Equipment Functional Blocks - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - Principal Characteristics of Multiplexing Equipment for the Synchronous Digital Hierarchy
A description is not available for this item.
January 1, 1994
Characteristics of Synchronous Digital Hierarchy (SDH) Equipment Functional Blocks - General Aspects of Digital Transmission Systems; Terminal Equipments (Study Group 15) 78 pp
A description is not available for this item.
January 1, 1990
Characteristics of Synchronous Digital Hierarchy (SDH) Equipment Functional Blocks - General Aspects of Digital Transmission Systems; Terminal Equipments
A description is not available for this item.

References

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