ISDN Networks

Course Overview

Integrated Services Digital Networking, ISDN, revolutionised telecommunications networking in that it brought together the first viable convergence of voice and data networking. ISDN offers the power of dedicated bandwidth, that had been available with point to point full and fractional E1/T1 static leased lines.

ISDN then gives the user the power to switch that bandwidth to any given destination in the same way as setting up a telephone call.

This course provides an essential coverage of ISDN networking technology markets, systems, and operation. It also covers ISDN network troubleshooting techniques, and an objective discussion of the applications that are be typically served by ISDN.

Audience

This course is essential for all staff who will install, configure, administrate, support, sell, or market ISDN networking products services, or solutions.

Prerequisites

Delegates must have a good understanding of datacommunications principles, or have attended Course 301: Introduction to Data Communications and Networking, prior to attending.

Course Outline

The technology behind ISDN

• Digital Telephony End User Systems
• Single User
• PABX Users
• Video Conferencing
• Call Centres
• Computer Telephony Integration
• Automatic Call Distribution
• Direct Inward Access
• Digital Network Addressing
• Toll free, mixed, and premium tariff numbers
• Virtual Private Networks

Transmission Principles

• Digital Encoding of Analogue Speech
• Digital Line Transmission
• Companding
• A-Law /m-Law
• Compression Techniques
• 32kbit/s ADPCM

Switching Principles

• Preview of Switching Principles
• Structuring a Digital Network
• The Stages of a Digital Telephony Call
• The Basic Switching Matrix
• Blocking
• Concentration and Expansion
• Time Switching
• Space Switching
• The Time-Space-Time Switchblock
• Digital Exchange Control Systems

Current ISDN services

• ISDN Basic Rate service
• ISDN Primary Rate service
• ISDN Broad Band service
• ISDN structure and terminology
• Network Termination Equipment: NT1, NT2
• Terminal Equipment types: TE1, TE2
• Terminal Adapters
• U,R,T, and S reference points
• Access points

ISDN standards

• ISDN and the OSI Model
• CCITT I and Q series recommendations
• The U Interface
• Systems interconnected over the U interface
• I.430/I.431 and the ISDN layer 1 frame structure
• Q.921/I.441 ISDN layer 2 LAPD operation
• The S and T interfaces
• The ISDN signalling interface, CCITT Q.931/I.450 signalling operation
• Q.931 Message types
• Q.931 Information elements
• Q.931 operation

ISDN Trunk Signalling

• C7, SS7, CCITT Signalling System Number 7, defined
• Where C7 is used
• C7 Layer 2 protocol structure (MTP2)
• C7 MTP 2 operation
• C7 Layer 3 Protocol structure (MTP3)
• C7 MTP3 operation
• Level 4 messages (Group 0-7)

Other protocols and ISDN

• X.25 modes of operation over ISDN
• Frame Relay
• Asynchronous Transfer Mode (ATM) and Broad Band ISDN (B-ISDN)
• Associated technologies
• The need for ATM its markets
• Standards and ATM
• The ATM/B-ISDN Protocol stack
• User Plane, Control Plane and Management Plane

ISDN Case Studies