YD/T 3843-2021
Technical requirements for access optical transport network (OTN) equipment (English Version)

Standard No.

YD/T 3843-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

Professional Standard - Post and Telecommunication  CN  /  YD

Latest

YD/T 3843-2021

Introduction

Interpretation of the core content of the standard

This standard specifies the technical requirements for access-type OTN equipment below the integrated service access node of the metropolitan area network/local network, and focuses on standardizing the key elements such as system structure, interface adaptation, performance indicators, etc. of the two types of equipment: fixed box type and plug-in type.

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Device Architecture Comparison

Dimensions	Fixed-box devices	Plug-in devices
Cross-capacity	Time slot fixation	≥80G
Management complexity	Debug-free design	Support for hierarchical TCM
Typical power consumption	≤60W	No hard limit

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Key Technology Analysis

ODUk adaptation function

Supports the ODUflex lossless adjustment mechanism, and realizes flexible carrying of FE/GE/10GE and other services through GMP/AMP mapping. The time slot allocation follows the sequential sorting principle.

Packet processing capability

Ethernet services support 6 types of service models such as EPL/EVPL. The QoS mechanism includes:

• Flow classification based on DSCP/VLAN
• CIR/EIR dual-rate three-color marking
• Minimum 1Mbit/s rate adjustment granularity

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Typical application scenarios

Macro site remote solution

Using all-outdoor fixed box equipment to achieve:

1. BBU is deployed in a centralized manner, and RRU is cascaded through OTN equipment
2. Single pair of optical fibers carries multi-site services
3. Supports extreme environments of -40℃~+55℃

Data center interconnection

Through Plug-in device provides:

• OTU4 interface (optional)
• Ultra-low latency of <50μs
• IP65 protection grade

YD/T 3843-2021 Referenced Document

• ETSI EN 300 019 Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 2-8: Specification of environmental tests; Stationary use at underground locations
• ETSI EN 300 132 Environmental Engineering (EE); Power supply interface at the input to telecommunications equipment; Part 3: Operated by rectified current source@ alternating current source or direct current source up to 400 V (V1.2.1)
• ETSI EN 300 386 Telecommunication network equipment; Harmonised Standard for ElectroMagnetic Compatibility (EMC) requirements
• GB/T 15941-2008 Requirements for synchronous digital hierarchy(SDH) optical fiber cable line systems
• GB/T 19286-2015 Electromagnetic Compatibility Requirements and Measurement Methods for Telecommunications Network Equipment
• GB/T 3482-2008 Lightning test method for electronic equipments
• IEC 61000-6-2 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity standard for industrial environments
• IEC 61000-6-4 Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission standard for industrial environments
• IEEE 802.1AX-2014 Local and metropolitan area networks- Link Aggregation (IEEE Computer Society)
• YD 5083-2005 Specification for Seismic Test of Telecommunications Equipment
• YD/T 1022-1999 Requirement of synchronous digital hierarchy (SDH) equipment function
• YD/T 1238-2002 Technical requirements for SDH multi-service transport platform
• YD/T 1821-2008 The Requirement of Environment Conditions for Genual Equipment Room for Communication
• YD/T 1948.3-2010 Technical requirement of ethernet over transport networks.Part 3:Ethernet services framework
• YD/T 1948.4-2010 Technical requirement of ethernet over transport networks.Part 4:Ethernet OAM
• YD/T 1948.5-2011 Technical requirement of Ethernet over transport network.Part 5: Ethernet private line service and Ethernet virtual private line service
• YD/T 1990-2009 General technical requirements for Optical Transport Network
• YD/T 2374-2011 General Technical Requirements for Packet Transport Network (PTN)
• YD/T 2397-2012 Technical specification for packet transport network(PTN)equipment
• YD/T 2484-2013 Packet Enhanced Optical Transport Network (OTN) Equipment Technical Requirements
• YD/T 2713-2014 Technical requirements for Optical Transport Network (OTN)protection
• YDN 099-1998 Optical Synchronous Transport Network Technical System (Internal Standard)

YD/T 3843-2021 history

• 2021 YD/T 3843-2021 Technical requirements for access optical transport network (OTN) equipment

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