tailieunhanh - The Synchronisation of Telecommunications Network

Many services running on modern digital telecommunications networks require accurate synchronization for correct operation. For example, if switches do not operate with the same clock rates, then slips will occur and degrade performance. Telecommunication networks rely on the use of highly accurate primary reference clocks which are distributed network wide using synchronization links and synchronization supply units. | The Synchronisation of Telecommunications Networks Issue 05 01 Slide http Oscilloquartz SA Contents I. The Need for Synchronisation II. Characterizing Synchronisation Quality III. Synchronisation Distribution General Principles IV. Synchronisation Distribution SDH SONET-based Solution 1. Elements 2. Architecture 3. Synchronisation Status Message SSM V. Synchronisation Distribution GPS-based and MixedSolution J Issue 05 01 Slide http Oscilloquartz SA Contents VI. Synchronisation Distribution From Co-operating Network VII. Summary on Standards VIII. How to Synchronize Mixed Technology Networks 1. Mixed Technology Network Example 2. SDH and SONET Networks 3. The Public Switched Telephony Network Issue 05 01 Slide http Oscilloquartz .