LAN networks

Quadrimestre 4 -

General course description

The course presents the WAN concepts and their fundaments, the different solutions for LAN interconnections as well as access methods to these networks.

The laboratory assignements enable the students to become familiar with the communication protocols using protocol simulators and analysers as well as working on a WAN network.

Learning basic skills

First-year courses:

  • Introduction to networks
  • Communication protocols
  • Signal and transmission

Course Aims

  • Understand how data, voice and video are transmitted in a WAN
  • Understand how a WAN interacts with a LAN network
  • Understand the differents access technologies in WAN
  • Define WAN protocols and technologies adapted to current and future applications, i.e. current backbone networks and the information highways to be.

Course Outline

Chapter 1: Introduction to WAN (basic concepts)

  • Differences between a transmissison layer, a thread layer and a WAN circuit layer
  • Anisochronous vs. synchronous
  • Anisochronous vs. isochronous
  • Analog networks vs. digital networks
  • Encoding and compression: PCM, ADPCM, CELP
  • FDM, TDM and STDM
  • Digital transmission: PDH/SDH
  • Layers/bundles changeover
  • CONS and CLNS networks
  • X25 - F/R - ATM: SVC vs. PVC and QOS

Chapter 2: WAN fundaments

  • WAN vs. LAN/MAN
  • Signaling in a WAN: CAS, CCS, V5 - V5.2, CCITT#7 or SS#7, P-NNI
  • Traffic management and WAN - bandwidth and access rates
  • WAN topology: meshed, hierarchical, stellar, in circle
  • WAN OSI standards
    • Function of the different layers
    • Transport and application layers: protocols
    • PSTN, PDN, RNIS, Frame Relay, B-ISDN, SDH/SONET, ATM
  • Internet standards
    • Addressing and multicasting IP

Chapter 3: Access technologies WAN

  • Modem
    • Standards, transmission rates, duplex capacity, modes, media
  • Wire-line access technologies
    • Local copper loop: xDSL, HFC, FTTF, FTTC, FTTH
  • Wireless access technologies


  • Use of a network simulator
  • Use of a protocol analyzer
  • Analysis of a HDLC protocol and its derivative versions
  • Protocol analysis: X25-RNIS -Frame Relay-ATM
  • Interaction: levels 1, 2, and 3
  • Analysis of the protocol TCP/IP
  • Demonstration and use of a WAN


  • Tanenbaum, Réseaux, Dunod
  • Introduction aux infrastructures WAN, Telindus High-tech Institute