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Transmission Technologies

Network Synchronization from TDM to IP and Mobile Backhaul Networks

Pre-Requisite for Participants:

For best understanding and enjoyment of all topics of this course, a basic knowledge of TDM, PDH, SDH/SONET systems is recommended.

Key Benefits:

Network synchronization plays a central role in telecommunications. It determines the quality of most services provided by network operators. Nevertheless, this subject is widely misunderstood.

Quality of service degradations due to some synchronization problem look of mysterious origin for almost everybody but the (good) synchronization engineer. As a result, gross mistakes in system design produce quality-of-service degradations that unfortunately, due to ignorance, are often deemed unavoidable.

After attending this course, participants will :

  • know all fundamental concepts of network synchronization;
  • be capable to avoid mistakes in synchronization network design, planning and operation;
  • be capable to understand technical documentation from equipment and system suppliers;
  • be capable of interacting effectively with product managers of equipment and system suppliers, avoiding misunderstandings that may yield additional costs;
  • be capable to diagnose synchronization troubles;
  • be capable to intervene appropriately to correct synchronization faults;
  • possess adequate knowledge to assess actual synchronization requirements for their networks, thus avoiding unnecessary or, on the contrary, insufficient investments.

Who Should Attend?
This course has been designed primarily for the engineers of telecommunications operators, service providers and equipment suppliers. This may include, but not exclusively, system engineers, network planners, designers and engineers in charge of system testing, operation, maintenance and customer support. Also senior personnel with strong practical expertise in this field will discover several enlightening aspects and will benefit from attending it.

The richness and depth of course topics may be adapted to suit the specific interests of the attendees, covering a wide spectrum of practical and theoretical issues in a wide range of applications.

Course Duration:


Course Outlines:

Day 1

  • Basic concepts of synchronization
  • Synchronous and asynchronous digital multiplexing
  • Digital multiplexing
  • Timing aspects in SDH/SONET networks

Day 2

  • Evolution of network synchronization requirements and architectures from fixed to mobile communications
  • Synchronization networks

Day 3

  • Synchronization network planning
  • Synchronization network management
  • Synchronization network performance monitoring
  • Synchronization network protection: Synchronization Status Messages (SSM)
  • Practical examples of synchronization networks
  • Principles of Network Time Protocol (NTP) and IEEE1588 Precision Time Protocol (PTP)


Day 4

  • Synchronization in IP and mobile backhaul networks
  • Models and characterization of clocks in telecommunications

Day 5

  • Physical principles and technology of clocks
  • Synchronization measurement in telecommunications
  • Open discussion of practical problems and of customer’s network architecture

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