Synchronous Digital Hierarchy

ja

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Synchronous Digital Hierarchy

Quality:

Synchronous Digital Hierarchy - standardized protocol that transfers multiple digital bit streams synchronously over optical fiber. Article "Synchronous Digital Hierarchy" in Japanese Wikipedia has 15.1 points for quality (as of July 1, 2025). The article contains 8 references and 5 sections.

This article has the best quality in German Wikipedia. However, the most popular language version of this article is Russian.

Since the creation of article "Synchronous Digital Hierarchy", its content was written by 20 registered users of Japanese Wikipedia and edited by 514 registered Wikipedia users in all languages.

The article is cited 70 times in Japanese Wikipedia and cited 763 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Japanese): #22702 in July 2022
  • Global: #10306 in August 2005

The highest popularity rank from 2008:

  • Local (Japanese): #88883 in April 2008
  • Global: #54334 in June 2009

There are 18 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1German (de)
Synchrone Digitale Hierarchie
41.926
2Spanish (es)
Jerarquía digital síncrona
41.1016
3Italian (it)
Synchronous Digital Hierarchy
39.5351
4Russian (ru)
Синхронная цифровая иерархия
20.6556
5Dutch (nl)
Synchrone digitale hiërarchie
15.9272
6Romanian (ro)
Ierarhie digitală sincronă
15.5832
7Japanese (ja)
Synchronous Digital Hierarchy
15.0805
8Finnish (fi)
Synchronous Digital Hierarchy
10.4813
9Arabic (ar)
تشبيك ضوئي متزامن
9.5706
10Norwegian (no)
Synchronous Digital Hierarchy
9.0962
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Synchronous Digital Hierarchy" in all the time
#LanguagePopularity awardRelative popularity
1Russian (ru)
Синхронная цифровая иерархия
1 024 088
2Spanish (es)
Jerarquía digital síncrona
773 766
3German (de)
Synchrone Digitale Hierarchie
507 843
4French (fr)
Hiérarchie numérique synchrone
270 615
5Italian (it)
Synchronous Digital Hierarchy
193 823
6Japanese (ja)
Synchronous Digital Hierarchy
149 964
7Polish (pl)
Synchronous Digital Hierarchy
141 634
8Portuguese (pt)
SDH
136 973
9Chinese (zh)
同步数字体系
54 753
10Dutch (nl)
Synchrone digitale hiërarchie
45 927
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Synchronous Digital Hierarchy" in June 2025
#LanguagePopularity awardRelative popularity
1Russian (ru)
Синхронная цифровая иерархия
857
2German (de)
Synchrone Digitale Hierarchie
584
3Spanish (es)
Jerarquía digital síncrona
440
4Japanese (ja)
Synchronous Digital Hierarchy
254
5Italian (it)
Synchronous Digital Hierarchy
249
6Chinese (zh)
同步数字体系
200
7French (fr)
Hiérarchie numérique synchrone
191
8Polish (pl)
Synchronous Digital Hierarchy
120
9Portuguese (pt)
SDH
99
10Ukrainian (uk)
Синхронна цифрова ієрархія
87
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Synchronous Digital Hierarchy" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1German (de)
Synchrone Digitale Hierarchie
107
2Russian (ru)
Синхронная цифровая иерархия
63
3Dutch (nl)
Synchrone digitale hiërarchie
51
4French (fr)
Hiérarchie numérique synchrone
49
5Spanish (es)
Jerarquía digital síncrona
48
6Italian (it)
Synchronous Digital Hierarchy
46
7Norwegian (no)
Synchronous Digital Hierarchy
21
8Japanese (ja)
Synchronous Digital Hierarchy
20
9Polish (pl)
Synchronous Digital Hierarchy
20
10Chinese (zh)
同步数字体系
18
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Synchronous Digital Hierarchy" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Arabic (ar)
تشبيك ضوئي متزامن
0
2Catalan (ca)
Jerarquia digital síncrona
0
3German (de)
Synchrone Digitale Hierarchie
0
4Spanish (es)
Jerarquía digital síncrona
0
5Finnish (fi)
Synchronous Digital Hierarchy
0
6French (fr)
Hiérarchie numérique synchrone
0
7Hungarian (hu)
Szinkron digitális hierarchia
0
8Italian (it)
Synchronous Digital Hierarchy
0
9Japanese (ja)
Synchronous Digital Hierarchy
0
10Dutch (nl)
Synchrone digitale hiërarchie
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Synchronous Digital Hierarchy" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1French (fr)
Hiérarchie numérique synchrone
228
2German (de)
Synchrone Digitale Hierarchie
98
3Japanese (ja)
Synchronous Digital Hierarchy
70
4Russian (ru)
Синхронная цифровая иерархия
64
5Italian (it)
Synchronous Digital Hierarchy
49
6Chinese (zh)
同步数字体系
47
7Spanish (es)
Jerarquía digital síncrona
44
8Dutch (nl)
Synchrone digitale hiërarchie
30
9Polish (pl)
Synchronous Digital Hierarchy
23
10Ukrainian (uk)
Синхронна цифрова ієрархія
20
More...

Scores

Estimated value for Wikipedia:
Japanese:
Global:
Popularity in June 2025:
Japanese:
Global:
Popularity in all years:
Japanese:
Global:
Authors in June 2025:
Japanese:
Global:
Registered authors in all years:
Japanese:
Global:
Citations:
Japanese:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
تشبيك ضوئي متزامن
caCatalan
Jerarquia digital síncrona
deGerman
Synchrone Digitale Hierarchie
esSpanish
Jerarquía digital síncrona
fiFinnish
Synchronous Digital Hierarchy
frFrench
Hiérarchie numérique synchrone
huHungarian
Szinkron digitális hierarchia
itItalian
Synchronous Digital Hierarchy
jaJapanese
Synchronous Digital Hierarchy
nlDutch
Synchrone digitale hiërarchie
noNorwegian
Synchronous Digital Hierarchy
plPolish
Synchronous Digital Hierarchy
ptPortuguese
SDH
roRomanian
Ierarhie digitală sincronă
ruRussian
Синхронная цифровая иерархия
svSwedish
Synkron digital hierarki
ukUkrainian
Синхронна цифрова ієрархія
zhChinese
同步数字体系

Popularity rank trends

Best Rank Japanese:
#88883
04.2008
Global:
#54334
06.2009

AI rank trends

Best Rank Japanese:
#22702
07.2022
Global:
#10306
08.2005

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Synchronous Digital Hierarchy from Wikipedia articles about Plesiochronous digital hierarchy, SDH, Small form-factor pluggable transceiver, Synchronous optical networking and OSI model. Whereas reading the article about Synchronous Digital Hierarchy people most often go to Wikipedia articles on Plesiochronous digital hierarchy, Multiplexing, Synchronous optical networking, Asynchronous Transfer Mode and E-carrier.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

pt: SDH

News from 12 August 2025

On 12 August 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Cristiano Ronaldo, Wednesday, Georgina Rodríguez, ChatGPT, Weapons, Jenna Ortega, deaths in 2025, Taylor Swift, Miguel Uribe Turbay, 2025–26 UEFA Champions League.

In Japanese Wikipedia the most popular articles on that day were: 日本航空123便墜落事故, 坂本九, 二階堂ふみ, カズレーザー, 北原遥子, やなせたかし, 柏木由紀子, 大竹七未, 大島花子, 舞坂ゆき子.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information