Ethernet Time Transfer through a U.S. Commercial Optical Telecommunications Network

reportActive / Technical Report | Accession Number: ADA623787 | Open PDF

Abstract:

There is a need to back up critical timing infrastructure at the national level. This paper describes a joint project employing commercial equipment to send national timing signals through a telecommunication network. This experiment connects UTCNIST in Boulder, Colorado with UTCUSNO at the Alternate Master Clock at Schriever AFB via a telecommunication providers optical network using the Precise Time Protocol PTP to compare the time standards. The experiment was started in April 2014 and will run through the end of 2014. The paper provides insight into both the planning and validation of the transport path as well as analysis of the experimental data. The focus here is using a US commercial telecom carrier to transfer time between two national real-time standards of UTC.

Author(s):
Weiss, M. ; Cosart, Lee ; Hanssen, James ; Hicks, S. ; Chase, C. ; Brown, C. ; Allen, C. ; Johnson, P. ; Wiltsie, G. ; Coleman, D.
Author Organization(s):
NAVAL OBSERVATORY WASHINGTON DC TIME SERVICE DIV
Supplementary Note:
Presented at the 2014 Precise Time and Time Interval Meeting, ION PTTI 2014, in Boston MA on 1-4 Dec 2014 and published in proceedings of the same, p214-220. Prepared in collaboration with National Istitute of Standards and Technology (NIST) Time and Frequency Division, Microsemi Corporation, and CenturyLink Inc. The original document contains color images. DOI: 10.21236/ADA623787
Pagination:
0008

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
USNO-TS
 Subject Terms
Joint Capability Areas:
JCA_6_Net Centric; JCA_6.1.3_Switching and Routing; JCA_6.1_Information Transport; JCA_JCA_4.1.2_Sustain the Force; JCA_4.1_Deployment and Distribution; JCA_5_Command and Control; JCA_6.4.1_Secure Information Exchange; JCA_5.3_Planning; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_6.4_Information Assurance; JCA_8_Building Partnerships
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*OPTICAL COMMUNICATIONS, *TIME SIGNALS, COMMUNICATIONS PROTOCOLS, TIME STANDARDS
Field(s)/Group(s):
Optics, Telemetry
Keyword(s):
UTC(UNIVERSAL TIME CLOCK), PTP(PRECISE TIME PROTOCOL), ETHERNET TIME TRANSFER
Report Date:
2014 Dec 01
Creation Date:
2015 Dec 02