T1X1.3/98-065 CONTRIBUTION TO T1 STANDARDS PROJECT ************************************************************************************** STANDARDS PROJECT: Digital Optical Hierarchy ************************************************************************************** TITLE: Proposal for Frequency Drift Measurement Interval for T1.101 ************************************************************************************** AUTHOR:

This contribution discusses the measurement intervals for the frequency offset and drift measurements for the Stratum 3 and 3E clocks. Expressions are obtained for the standard deviation of the measurement error, assuming the noise generation is either White Phase Modulation or Flicker Phase Modulation. The results are used to develop proposals for the frequency drift measurement interval in Section 8.2.2 of New Draft T1.101. ************************************************************************************** NOTICE This document has been prepared to assist the Standard Committee T1-Telecommunications. It is offered to the Committee as a basis for discussion and is not a binding proposal on Lucent Technologies. The requirements presented in this document are subject to change in form and numerical value after more study. Lucent Technologies specifically reserves the right to add to, or amend, the statements contained herein.