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ITU-T G.107 (02/2014)
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ITU-T G.107 (02/2014)
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Le modèle E: modèle de calcul utilisé en planification de la transmission
La Recommandation UIT-T G.107 décrit l'algorithme du modèle dit modèle E en tant que modèle UIT-T commun d'évaluation de l'indice de transmission. Ce modèle de calcul peut être utile à ceux qui planifient la transmission pour leur permettre de s'assurer que les usagers sont satisfaits de la qualité de la transmission de bout en bout. Le résultat principal fourni par ce modèle est une évaluation scalaire de la qualité de la transmission. Une propriété fondamentale de ce modèle est l'utilisation de facteurs de dégradation de la transmission qui rendent compte des effets des équipements modernes de traitement des signaux.
Dans la version de 2000 de cette Recommandation, une version améliorée du modèle E a été offerte afin de mieux tenir compte des effets du bruit de salle du côté émission et de la distorsion de quantification. Avec la révision de 2002, la dégradation due à la perte de paquet aléatoire a été incluse sous forme paramétrique pour différents codecs. Depuis la version de 2003, une modélisation améliorée de la qualité est fournie dans le cas d'un faible effet local pour le locuteur. La version de 2005 visait à prédire de manière plus précise la qualité des codecs en conditions de pertes de paquets dépendantes (à court terme). Dans la version de 2009, on a ajouté un Appendice II décrivant un cadre provisoire pour les facteurs de dégradation de la transmission vocale à bande élargie. En 2011, cet Appendice a été mis à jour, compte tenu de la nouvelle Recommandation UIT-T G.107.1. Dans la version actuelle, le modèle a été étendu pour fournir une évaluation des dégradations dues au temps de transmission mieux adaptée également aux cas d'utilisation moins sensibles au temps de transmission. Les systèmes de téléphonie de qualité opérateur ou entreprise doivent être évalués avec les paramètres par défaut de sensibilité au temps de transmission, tandis que les systèmes de communication exigeant peu ou très peu d'interactivité peuvent être évalués avec des paramètres différents. Une mise en œuvre de référence est donnée dans l'Appendice III.
Citation:
https://handle.itu.int/11.1002/1000/12120
Series title:
G series: Transmission systems and media, digital systems and networks
G.100-G.199: International telephone connections and circuits
G.100-G.109: Transmission planning and the E-model
Approval date:
2014-02-13
Approval process:
AAP
Status:
Superseded
Maintenance responsibility:
ITU-T Study Group 12
Further details:
Patent statement(s)
Development history
Editions
Related Supplement(s)
Related technical papers and reports
Ed.
ITU-T Recommendation
Status
Summary
Table of Contents
Download
10
G.107 (06/2015)
In force
here
here
here
9
G.107 (02/2014)
Superseded
here
here
here
8.1
G.107 (2011) Amd. 1 (06/2012)
Superseded
-
-
here
8
G.107 (12/2011)
Superseded
here
here
here
7
G.107 (04/2009)
Superseded
here
here
here
6
G.107 (08/2008)
Superseded
here
here
here
5.1
G.107 (2005) Amd. 1 (06/2006)
Superseded
-
-
here
5
G.107 (03/2005)
Superseded
here
here
here
4
G.107 (03/2003)
Superseded
here
here
here
3
G.107 (07/2002)
Superseded
here
here
here
2.0
G.107 (2000) Err. 1 (05/2001)
Superseded
-
-
here
2
G.107 (05/2000)
Superseded
here
here
here
1
G.107 (12/1998)
Superseded
here
here
here
ITU-T Supplement
Title
Status
Summary
Table of contents
Download
G-100 series Suppl. 31 (03/1993)
Principles of determining an impedance strategy for the local network
In force
-
here
here
G-100 series Suppl. 32 (03/1993)
Transmission aspects of digital mobile radio systems
In force
-
here
here
G Suppl. 4 (12/1972)
Certain methods of avoiding the transmission of excessive noise between interconnected systems
In force
-
-
here
G Suppl. 5 (10/1984)
Measurement of the load of telephone circuits under field conditions
In force
-
-
here
G Suppl. 7 (12/1972)
Loss-frequency response of channel-translating equipment used in some countries for international circuits
In force
here
here
here
G Suppl. 8 (12/1972)
Method proposed by the Belgian telephone administration for interconnection between coaxial and symmetric pair systems
In force
-
-
here
G Suppl. 17 (10/1984)
Group-delay distortion performance of terminal equipment
In force
-
-
here
G Suppl. 19 (10/1984)
Digital crosstalk measurement (method used by the Administrations of France, the Netherlands and Spain)
In force
-
-
here
G Suppl. 22 (10/1984)
Mathematical models of multiplex signals
In force
-
-
here
G Suppl. 26 (10/1984)
Estimating the signal load margin of FDM wideband amplifier equipment and transmission systems
In force
-
-
here
G Suppl. 27 (10/1984)
Interference from external sources
In force
-
-
here
G Suppl. 28 (10/1984)
Application of transmultiplexers, FDM codecs, data-in-voice (DIV) systems and data-over-voice (DOV) systems during the transition from an analogue to a digital network
In force
-
-
here
G Suppl. 32 (11/1988)
Transfer of alarm information on 60-channel transmultiplexing equipment
In force
-
-
here
G Suppl. 34 (11/1988)
Temperature in underground containers for the installation of repeaters
In force
-
-
here
G Suppl. 35 (11/1988)
Guidelines concerning the measurement of wander
In force
-
-
here
G Suppl. 36 (11/1988)
Jitter and wander accumulation in digital networks
In force
-
-
here
G Suppl. 39 (02/2016)
Optical system design and engineering considerations
In force
here
here
here
G Suppl. 40 (10/2018)
Optical fibre and cable Recommendations and standards guideline
In force
here
here
here
G Suppl. 41 (02/2018)
Design guidelines for optical fibre submarine cable systems
In force
here
here
here
G Suppl. 42 (10/2018)
Guide on the use of the ITU-T Recommendations related to optical fibres and systems technology
In force
here
here
here
G Suppl. 43 (02/2011)
Transport of IEEE 10GBASE-R in optical transport networks (OTN)
In force
here
here
here
G Suppl. 44 (06/2007)
Test plan to verify B-PON interoperability
In force
here
here
here
G Suppl. 45 (09/2022)
Power conservation in optical access systems
In force
here
here
here
G Suppl. 46 (05/2009)
G-PON interoperability test plan between optical line terminations and optical network units
In force
here
here
here
G Suppl. 47 (09/2012)
General aspects of optical fibres and cables
In force
here
here
here
G Suppl. 48 (06/2010)
10-Gigabit-capable passive optical networks: Interface between media access control with serializer/deserializer and physical medium dependent sublayers
In force
here
here
here
G Suppl. 49 (09/2020)
Rogue optical network unit (ONU) considerations
In force
here
here
here
G Suppl. 50 (09/2011)
Overview of digital subscriber line Recommendations
In force
here
here
here
G Suppl. 51 (06/2017)
Passive optical network protection considerations
In force
here
here
here
G Suppl. 52 (09/2012)
Ethernet ring protection switching
In force
here
here
here
G Suppl. 53 (12/2014)
Guidance for Ethernet OAM performance monitoring
In force
here
here
here
G Suppl. 54 (07/2015)
Ethernet linear protection switching
In force
here
here
here
G Suppl. 55 (12/2023)
Radio-over-fibre (RoF) technologies and their applications
In force
here
here
here
G Suppl. 56 (02/2016)
OTN transport of CPRI signals
In force
here
here
here
G Suppl. 57 (07/2015)
Smart home profiles for 6LoWPAN devices
In force
here
here
here
G Suppl. 58 (12/2023)
Optical transport network module framer interfaces
In force
here
here
here
G Suppl. 59 (02/2018)
Guidance on optical fibre and cable reliability
In force
here
here
here
G Suppl. 60 (09/2016)
Ethernet linear protection switching with dual node interconnection
In force
here
here
here
G Suppl. 62 (02/2018)
Gfast certification
In force
here
here
here
G Suppl. 64 (02/2018)
PON transmission technologies above 10 Gb/s per wavelength
In force
here
here
here
G Suppl. 65 (10/2018)
Simulations of transport of time over packet networks
In force
here
here
here
G Suppl. 66 (09/2020)
5G wireless fronthaul requirements in a passive optical network context
In force
here
here
here
G Suppl. 67 (07/2019)
Application of optical transport network Recommendations to 5G transport
In force
here
here
here
G Suppl. 68 (12/2023)
Synchronization operations, administration and maintenance requirements
In force
here
here
here
G Suppl. 69 (09/2020)
Migration of a pre-standard network to a metro transport network
In force
here
here
here
G Suppl. 70 (09/2020)
Supplement on sub 1 Gbit/s services transport over optical transport network
In force
here
here
here
G Suppl. 71 (12/2023)
Optical line termination capabilities for supporting cooperative dynamic bandwidth assignment
In force
here
here
here
G Suppl. 72 (04/2021)
Modelling consideration for optical media networks
In force
here
here
here
G Suppl. 73 (10/2021)
Influencing factors on quality of experience for multiview video (MVV) services
In force
here
here
here
G Suppl. 74 (12/2021)
Network slicing in a passive optical network context
In force
here
here
here
G Suppl. 75 (12/2021)
5G small cell backhaul/midhaul over TDM-PON
In force
here
here
here
G Suppl. 76 (12/2021)
Optical transport network security
In force
here
here
here
G Suppl. 77 (06/2022)
Supplement 77 to ITU-T G-series of Recommendations - Influencing factors on quality of experience (QoE) for video customized alerting tone (CAT) and video customized ringing signal (CRS) services
In force
here
here
here
G Suppl. 78 (09/2022)
Use case and requirements of fibre-to-the-room for small business applications
In force
here
here
here
G Suppl. 79 (12/2023)
Latency control and deterministic capability over a PON system
In force
here
here
here
G Suppl. 29 (03/1993)
Planning of mixed analogue-digital circuits (chains, connections)
In force
-
here
here
Title
Approved on
Download
Roadmap for QoS and QoE in the ITU-T Study Group 12 context (TR-RQ)
2023
here
Considerations on the use of GNSS as a primary time reference in telecommunications
2020
here
Use of G.hn in industrial applications
2020
here
ISDN field trial guidelines
1991
here
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