G.811
G.811 Timing characteristics of primary reference clocks is a recommendation from the ITU Telecommunication Standardization Sector (ITU-T). It specifies requirements for primary reference clock devices in synchronization networks. It discusses timing requirements for connecting national telecommunications networks.[1] Primary reference clocks need to be highly accurate and are often based on caesium atomic clocks that meet the standards of G.811.[2]
References
- ^ Smith, David R. (2003). Digital Transmission Systems. Springer Science & Business Media. p. 652. ISBN 978-1-4020-7587-2.
- ^ Manning, Trevor (2009). Microwave Radio Transmission Design Guide. Artech House. p. 88. ISBN 978-1-59693-457-3.
External links
- Recommendation G.811, International Telecommunication Union, September 1997, retrieved 2012-09-28