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首页G.8262/Y.1362 同步以太网设备从钟(SEC)的定时特性
G.8262/Y.1362 同步以太网设备从钟(SEC)的定时特性
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更新于2023-03-03
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同步以太网设备从钟(SEC)的定时特性 Timing characteristics of synchronous ethernet equipment slave clock (EEC) 2007年6月通过的ITU-T G.8262 标准 (原G.paclock)规定了同步以太网网络设备中使用的时钟器件的最低性能要求。该标准规定的PLL性能参数包括漂移、抖动、瞬态相位、时钟带宽、频率精度和保持等
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International Telecommunication Union
ITU-T
G.8262/Y.1362
TELECOMMUNICATION
STANDARDIZATION SECTOR
OF ITU
(08/2007)
SERIES G: TRANSMISSION SYSTEMS AND MEDIA,
DIGITAL SYSTEMS AND NETWORKS
Packet over Transport aspects – Quality and availability
targets
SERIES Y: GLOBAL INFORMATION
INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS
AND NEXT-GENERATION NETWORKS
Internet protocol aspects – Transport
Timing characteristics of synchronous Ethernet
equipment slave clock (EEC)
ITU-T Recommendation G.8262/Y.1362
ITU-T G-SERIES RECOMMENDATIONS
TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS
INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100–G.199
GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-
TRANSMISSION SYSTEMS
G.200–G.299
INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE
SYSTEMS ON METALLIC LINES
G.300–G.399
GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS
ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC
LINES
G.400–G.449
COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450–G.499
TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600–G.699
DIGITAL TERMINAL EQUIPMENTS G.700–G.799
DIGITAL NETWORKS G.800–G.899
DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900–G.999
QUALITY OF SERVICE AND PERFORMANCE – GENERIC AND USER-RELATED
ASPECTS
G.1000–G.1999
TRANSMISSION MEDIA CHARACTERISTICS G.6000–G.6999
DATA OVER TRANSPORT – GENERIC ASPECTS G.7000–G.7999
PACKET OVER TRANSPORT ASPECTS G.8000–G.8999
Ethernet over Transport aspects G.8000–G.8099
MPLS over Transport aspects G.8100–G.8199
Quality and availability targets G.8200–G.8299
Service Management G.8600–G.8699
ACCESS NETWORKS G.9000–G.9999
For further details, please refer to the list of ITU-T Recommendations.
ITU-T Y-SERIES RECOMMENDATIONS
GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-
GENERATION NETWORKS
GLOBAL INFORMATION INFRASTRUCTURE
General Y.100–Y.199
Services, applications and middleware Y.200–Y.299
Network aspects Y.300–Y.399
Interfaces and protocols Y.400–Y.499
Numbering, addressing and naming Y.500–Y.599
Operation, administration and maintenance Y.600–Y.699
Security Y.700–Y.799
Performances Y.800–Y.899
INTERNET PROTOCOL ASPECTS
General Y.1000–Y.1099
Services and applications Y.1100–Y.1199
Architecture, access, network capabilities and resource management Y.1200–Y.1299
Transport Y.1300–Y.1399
Interworking Y.1400–Y.1499
Quality of service and network performance Y.1500–Y.1599
Signalling Y.1600–Y.1699
Operation, administration and maintenance Y.1700–Y.1799
Charging Y.1800–Y.1899
NEXT GENERATION NETWORKS
Frameworks and functional architecture models Y.2000–Y.2099
Quality of Service and performance Y.2100–Y.2199
Service aspects: Service capabilities and service architecture Y.2200–Y.2249
Service aspects: Interoperability of services and networks in NGN Y.2250–Y.2299
Numbering, naming and addressing Y.2300–Y.2399
Network management Y.2400–Y.2499
Network control architectures and protocols Y.2500–Y.2599
Security Y.2700–Y.2799
Generalized mobility Y.2800–Y.2899
For further details, please refer to the list of ITU-T Recommendations.
ITU-T Rec. G.8262/Y.1362 (08/2007) i
ITU-T Recommendation G.8262/Y.1362
Timing characteristics of synchronous Ethernet equipment slave clock (EEC)
Summary
ITU-T Recommendation G.8262/Y.1362 outlines requirements for timing devices used in
synchronizing network equipment that uses synchronous Ethernet. This Recommendation defines the
requirements for clocks, e.g., bandwidth, frequency accuracy, holdover and noise generation.
Source
ITU-T Recommendation G.8262/Y.1362 was approved on 13 August 2007 by ITU-T Study
Group 15 (2005-2008) under the ITU-T Recommendation A.8 procedure.
Keywords
Clock, jitter, synchronization, wander.
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