Synchronisation for Telecommunications Networks

25-26 May 2006

If you would like to make a provisional registration for this course send an email with your full contact details to: the Continuing Education Office

Sponsored by

chronos gif 

Course Overview

With over 15 years experience in the telecom sector and more than 8 years designing networks and measuring sync quality, Chronos Technology is the leading UK value added solutions provider for the supply of telecommunications Network Synchronisation infrastructure.

Building on the successful seminars and MasterClasses presented over the past 5 years, Chronos, in association with the Universtiy of Surrey, presents this short course for people interested in learning more about the specialist topic of Synchronisation for Telecommunications Networks. The course is delivered regularly both in the UK and abroad.

The course was formulated for manufacturers of telecommunications equipment and licensed carriers and users of digital telecom wireline and wireless traffic. 100's of delegates from dozens of organisations have attended the MasterClass. It is suitable for:

Who should attend?

It is recommended that the attendees have at least a basic understanding of SDH transport technology. Pre-reading prior to the course should be sufficient.

Please note that numbers on this course are limited due to the lecture room size so early booking is advisable.

The Presenters

ian wright picture

Ian Wright

Ian Wright is former Technical Services Manager for Chronos Technology now working for Easynet in Network Development. Ian graduated in 1985 with a BSc Electronic and Electrical Engineering from the University of Surrey, he joined BICC Research and Engineering working on Voice, Video and Data Comms including an early Line of Site Ethernet Solution before leaving to Join GEC Hirst Research in 1997 working on FDDI, MAN and ATM. In 1990 in joined Fujitsu Telecom R and D Centre as part of the Core Network Group working on SDH, WDM, ATM and NGN. Active in SDH and Synchronisation Standardisation during his time at Fujitsu and chaired the ETSI TM3/1 Synchronisation Experts Group from 1997 - 2001. In 2002 he joined Chronos working primarily in the synchronisation arena including product development of SyncWatch, training including the Sync MasterClass and product related training, Sync consultancy and SyncAudit(tm).

Chris Farrow Technical Services Manager




Chris Farrow , BSc , Technical Services Manager

Chris joined Chronos from Marconi’s UK Technical Assistance Centre in Liverpool in January 2006. Whilst at Marconi, Chris was responsible for the Field Trial, Rollout and Support of Enhanced Synchronisation Products and Services within Marconi’s System X Switching and SDH products. Chris is responsible for all professional services focused on the sync product area including internal and external training, Sync MasterClass, Sync Audit and network planning consultancy, customer demonstrations and the SyncWatch Development. Chris holds an Honours degree in Physics & Electronics from UMIST – University of Manchester, Institute of Science & Technology.

Course Content

Provisional Timetable

Day 1

Pre-Course Question Session

  • Written test to assess level of knowledge
  • Over 40 questions and acronym definitions

Introduction to Telecom Network Synchronisation

  • History of Telecoms Synchronisation
  • Emerging new technologies
  • Basic misconceptions about sync
  • Typical sync routes through a network
  • Impact of poor sync on carrier's services

Fundamental Principles of Synchronisation

  • Acronyms and Definitions
  • Jitter and Wander
  • Slips and Pointer Adjustments
  • Introduction to mixed technology problems

Time Synchronisation (NTP)

  • History of Computer Time
  • NTP Applications
  • Design & Operation
  • Security
  • Developments
  • Introduction to IEEE 1588-PTP

Synchronisation Elements

  • Types of oscillator
  • Introduction to GPS
  • PRS Clocks
  • Slave clocks - SSU and SEC
  • VCO and PLL principles

Synchronisation Quality Metrics

  • Definitions
  • Derivation of TIE and sample data
  • Derivation of MTIE and sample data
  • Derivation of TDEV and sample data
  • Real application examples


  • ITU-T, ETSI, ANSI and Telcordia Standards
  • Clock standards
  • Electrical interface standards
  • Jitter and Wander standards

Day 2

Synchronisation over SDH & OTN

  • Review of SDH and SONET technology
  • Network Elements
  • Pointers
  • Sample SDH network MTIE "signatures"
  • Use of Retimers
  • Sync of WDM
  • Review of Optical Transport Networks
  • Optical Network Signal Structure
  • OTN Sync Transport Mechanisms
  • Examination of the transport of SDH clients over the OTN

Synchronisation in ATM & Packet Networks

  • Review of ATM technology
  • Network elements
  • Transport mechanism
  • Network Synchronous ACR and SRTS
  • Sample ATM network element MTIE "signatures"
  • Sync over Packet Networks

Synchronisation over PDH and DSL

  • PDH issues
  • ADSL, HDSL and SHDSL issues
  • Measured results

Core Network Sync & Exercises

  • Sync Distribution techniques
  • Transport Mechanism
  • Sync Design Exercises
  • Mobile Network Sync
  • GSM and 3G
  • Network and Base Station Sync
  • Mobile Network Architecture and Connectivity

Applications affected by Sync

  • Voice over IP
  • Impairments to VoIP cased by poor sync
  • Fax and MODEM over IP

Architecture & Planning

  • Inter-Network Architecture
  • Intra-Network Architecture
  • Master Slave PRC
  • Flat PRC
  • Hybrid PRC
  • Intra-Node Architecture
  • Sync Element Interworking
  • Planning Rules
  • PRC Level
  • SSU Level
  • PRC Autonomy Period
  • SEC Level
  • Network Examples

Post Course Questions

  • Repeat of questions from day 1
  • Comparison of marks
  • Review of answers


Price per person, including lunch, refreshments and printed course notes

Please note that we do not charge VAT on the above as we are classed as an educational establishment! This makes our courses extremely competitive. Discounts are also given for group bookings of 3 or more delegates on the course from the same company. Please phone +44 (0)1483 686040 for further information.

To reserve a place on the above course please complete this Registration Form

Credit Card Payments.

We can accept payment by credit card. However, these take time to process and can hold up registration, particularly in the case of overseas attendees where a VISA application is required. Therefore, when faxing us credit card details please include the following:

We cannot process your card without these details


Unfortunately on-site accommodation is not available on this course. Details of accommodation in the local area can be found on our website

Further Information

For further information and general enquiries, contact the Continuing Education Office

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Updated 25 April 2006