时钟定时

1、acket over Transport aspects Synchronization, quality and availability targets SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Transport Timing characteristics of packet-based equipment clocks Amendment 2 Recommendation ITU-T G.8263/Y.1363 (2012) Amendment 2 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENE。

2、acket 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 packet-based equipment clocks Amendment 1 Recommendation ITU-T G.8263/Y.1363 (2012) Amendment 1 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTI。

3、acket 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 primary reference time clocks Amendment 1 Recommendation ITU-T G.8272/Y.1367 (2012) Amendment 1 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTI。

4、acket over Transport aspects Synchronization, quality and availability targets SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Transport Timing characteristics of packet-based equipment clocks Amendment 2 Recommendation ITU-T G.8263/Y.1363 (2012) Amendment 2 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENE。

5、DIA, DIGITAL SYSTEMS AND NETWORKS Packet over Transport aspects Synchronization, quality and availability targets SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Internet protocol aspects Transport Timing characteristics of primary reference time clocks Amendment 1 Recommendation ITU-T G.8272/Y.1367 (2015) Amendment 1 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NE。

6、 SYSTEMS AND NETWORKS Packet over Transport aspects Synchronization, 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 Recommendation ITU-T G.8262/Y.1362 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 G。

7、 SYSTEMS AND NETWORKS Packet over Transport aspects Synchronization, quality and availability targets SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Internet protocol aspects Transport Timing characteristics of telecom grandmaster clocks for frequency synchronization Recommendation ITU-T G.8266/Y.1376 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL 。

8、 SYSTEMS AND NETWORKS Packet over Transport aspects Synchronization, quality and availability targets SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Transport Timing characteristics of primary reference time clocks Recommendation ITU-T G.8272/Y.1367 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARAC。

9、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 primary reference time clocks Recommendation ITU-T G.8272/Y.1367 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSI。

10、esign objectives for digital networks Timing requirements of slave clocks suitable for use as node clocks in synchronization networksITU-T Recommendation G.812 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300G.399。

11、va, 19 August 2015 ITU TELECOMMUNICATION STANDARDIZATION SECTOR Subject: Erratum 1 (08/2015) to Recommendation ITU-T G.8272/Y.1367 (2015), Timing characteristics of primary reference time clocks The arrows between “PRTC/T-GM under test“ and “Packet timing monitor“ in Figure I.8 should be labelled as PTP. Replace Figure I.8 with the following figure: 。

12、本标准规定的数宇同步网节点时钟的定时性能要求，是独立型和非独立型数字同步网范点时钟都必须浦足的基本要求。
关于独立型数字同步网节点时钟设备的特殊要求(例如，功能、监测,河靠性和环境等要求)和洲试方法，应满足数字同步网独立型节点从钟设备技术要求及侧试方法中所规定的要求。
本标准正式颁布后，有关数字同步网节点时钟等级、时钟设置和各级时钟的基本定时性能要求应以本标准为准。
本标准的附录A是标准的附录。
本标准由邮电部电信科学研究规划院提出并归口本标准由邮电部电信传愉研究所负责起草。
本标准主要起草人:汪建华、徐一军、胡昌军。
中华人民共和国通信行业标准数字同步网节点时钟系列及其定时特性YD/T 1012一1999Node clock set of digital synchronizationnetwork and its timing feature1范围本标准适用于我国数字同步网各级节点时钟。
本标准规定了1级基准时钟、2级节点时钟和3级节点时钟的频率准确度、抖动/漂劝、相位瞬变、相位不连续性、保待能力等定时特性。
关于节点从钟定时特性的测试方法，在本标准中不再作规定，可参照数字同步网独立型节点从。