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Database: 189760 (25 Oct 2025)
YD/T 4855-2024 English PDF
Standard ID
Contents [version]
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Standard Title (Description)
Status
PDF
YD/T 4855-2024
English
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3 days [Need to translate]
(Optical Service Unit (OSU) Technical Requirements)
Valid
YD/T 4855-2024
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Basic data
Standard ID
YD/T 4855-2024 (YD/T4855-2024)
Description (Translated English)
(Optical Service Unit (OSU) Technical Requirements)
Sector / Industry
Telecommunication Industry Standard (Recommended)
Classification of Chinese Standard
M33
Classification of International Standard
33.040.20
Date of Issue
2024-07-05
Date of Implementation
2024-10-01
Issuing agency(ies)
Ministry of Industry and Information Technology
Summary
This standard specifies the technical requirements for optical service units (OSUs) in optical transport networks (OTN), including OSU network architecture, OSU functional structure, OSU bit rate, client signal mapping to OSU, OSU multiplexing, OSU lossless bandwidth adjustment, OSU protection and OSU clock synchronization. This standard applies to the design, development, production and testing of OTN networks supporting OSU.