Timing information's 247 monitoring as an important factor of network synchronization quality support

Abstract
Networks timing information's 24×7 wander monitoring solution, actual both for Telecom synchronization networks and for IEEE1588 based networks, including optimally controlled PLL desing is described in this article. It also mentions a cost effective SDH or SyncE signals' probe unit design, expanded MTIE/TDEV metrics, and some monitoring experience with non- trivial results concerning GPS related issues.