TDM, PDH and SDH for Designers

3 Day Course
Hands On
Code PWL086

Book Now - 3 Delivery Methods Available:

Classroom Virtual Classroom Private Group - Virtual Self-Paced Online


This course provides and understanding of Time Division Multiplexing techniques. It identifies how TDM systems have evolved, It examines the structure of the Plesiochronous Digital Hierarchy (PDH), how services were delivered and how this is carried on Synchronous Digital Hierarchy today. It will identify the framing and signalling overhead elements of each service and examine the key design parameters for services deploying these technologies. It will also look at how these services can now be interfaces and emulated over Next Generation Networks. The course will include workshop exercises in design.


When you have completed this course you will be able to:

  • Describe the principles of Time Division Multiplexing

  • Compare the framing and Overhead bytes of PDH and SDH

  • Identify the different rates and Virtual Containers used in SDH

  • Undertake simple design exercise using TDM technologies


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Time Division Multiplexing Principles (7 topics)

  • Time Division Concepts
  • Channels
  • Slots
  • Sampling for Voice at 8000 sps
  • Evolution of T1 and then E1
  • Synchronization
  • Framing

E1 Standardization (13 topics)

  • Architecture
  • TE, NT and ET Endpoints
  • Slots and Channels
  • Pulse encoding over media
  • Physical presentations
  • Slot zero
  • Slot 16
  • Channel Associated of Signalling (CAS)
  • Common Channel Signalling
  • E1 Control and Management
  • Far End Alarm Control
  • Frame Alignment
  • CRC Protection

PDH Rates and Multiplexing (7 topics)

  • North American and International Rates compared
  • Higher rate multiplexing, framing and superfaming principles
  • E-series rates up to 565 Mbit/s
  • T-Series Rates
  • Physical interface options for different rates
  • Example cables used for transmission
  • Workshop 1: Using PDH services

SONET vs SDH a Comparison (10 topics)

  • How SONET Works
  • SONET Hierarchy: OC-1, OC-3,OC-12, OC-48 and OC-192
  • Signalling and Management in SONET
  • Modern evolutions and replacements for SONET
  • Differences and similarities
  • Relationship with STS-1, and STM-1
  • Frame Overhead
  • Line Overhead
  • Path Overhead
  • Carrying IP over SONET and Carrier Ethernet Evolution of SONET and SDH

Virtual Containers (10 topics)

  • SDH
  • Section Overhead
  • AU Pointers
  • Structure of Virtual Containers
  • Hierarchy of Payload Envelopes and Virtual Containers
  • G.707 Asynchronous and Byte Synchronous Mapping
  • Path Overhead for VC services
  • Performance
  • Workshop 2: Using SDH Services

Management Monitoring and Performance (17 topics)

  • Automatic Protection
  • 1+1 Protection Switching
  • APS K1 and K2 bits
  • Management Concepts
  • SDH Management Subsystem
  • G.784
  • CMIP vs SNMP
  • Management Information Bases
  • SDH MIBs
  • SDH system alarms
  • Input and Output Jitter
  • Operational Interfaces
  • Q-Interface
  • Required Defect Indicators
  • Synchronization Network Architecture
  • Workshop 3: Using APS

Evolution to NGN (3 topics)

  • Next Generation Infrastructures
  • Pseudo Wire Emulation Edge to Edge (PWE3)
  • PWE3 over MPLS

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Scheduled Dates

Please select from the dates below to make an enquiry or booking.


Different pricing structures are available including special offers. These include early bird, late availability, multi-place, corporate volume and self-funding rates. Please arrange a discussion with a training advisor to discover your most cost effective option.

Code Location Duration Price Mar Apr May Jun Jul Aug
Virtual Classroom (London)
3 Days $2,880

What Our Customers Say

The training was delivered with a high level of expertise and excellence. Instructor was highly knowledgeable.”

Technical Trainer, Aviat Networks

Overall the course was really good, the trainer really understood the material and was very approachable.”

Customer Training Manager, Aviat Networks

Excellent course, informative and well-paced.”

CSE, Cisco

Course was very well outlined. Topics were great and bridged many gaps.”

System Engineer, Cable & Wireless

An excellent intro to video encoding & MPEG transport streams - I would definitely recommend it.”

Broadcast Engineer, Cisco

Definitely an excellent intro. Left me interested in learning more.”

Broadcast Engineer, Eircom

Excellent training course with real examples and practical classroom demonstrations.”

Transport Designer, Orange

Instructor knowledge and experience was excellent.”

Solutions Engineer, Akamai

Excellent course, very clear and well organised. Course content delivery was very good.”

Assistant Engineer, Dhiraagu

Very informative and appropriate.”

Network Support Technician, BT

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