VPLS.US

Extending Ethernet Beyond Best Effort

Hierarchy 1: Cesium Clock. I have a buddy over in the Netherlands that has a cesium Clock in his apartment :)

Hierarchy 2: At the next level of hierarchy is Synchronization Supply Unit (SSU) or Building Integrated Timing Supply (BITS)

Hierarchy 3: SDH / ATM hardware clocks.

Requirements for SyncE are outlined in the timing characteristics of synchronous Ethernet equipment clock (ITU G.8262/Y1362) specifications. These specifications are based on ITU-T G.813 specification for SDH clocks.
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2012-07-11 14:47:58
2012-07-11 21:47:58
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Hierarchy 1: Cesium Clock. I have a buddy over in the Netherlands that has a cesium Clock in his apartment :)

Hierarchy 2: At the next level of hierarchy is Synchronization Supply Unit (SSU) or Building Inte ...]]>