TELEPHONY SECTIONS

 

 

 


VOICE SWITCHING BASICS

 

The telephone network is changing drastically with the deregulation and the resulting fierce competition.  New Operators provide now telephone services: local and long distance. They deploy their own telephony infrastructures.

 

This course is an initiation to voice switching and telephone network operation in the new competitive deregulated telephony environment

 

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Course Objective

 

The objective of this course is to give to the participants a basic training on:

·     Voice switching basics,

·     Telephone network architecture and operation

·     Voice switches operation

 

Public 
Technical person with an initial voice technical background

PREREQUISITE:
Telecommunication basic knowledge (multiplexing and switching)

Durée du cours : 1 jour

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Table of Contents

CIRCUIT SWITCHING BASICS

  • Voice coding and E1/T1 multiplexing
  • TDM Switching principles: time & space matrix
  • Signalling: introduction
  • General Architecture of a switching network

ISDN NETWORK

  •  End user Services and Access
  •  S0/To and S2/T2
  • ISDN end user’s signalling: LAPD et Q 931
  •  Call Control procedures
  • ISDN PABX operation

TRANSIT SWITCHING & SS7 signalling

  •  SS7Intelligent network: SP, STP, SCP
  •  SS7 access characteristics
  • MTP Protocol for signalling messages transfer
  • Signalling Applications: ISUP, TUP, SCCP
  •  Transit call control procedures (via SS7)
  • Call control procedure for 800 numbers
  •  Transit switch

VOICE SWITCH

  •  Voice switch general architecture
  •  Switching matrix
  • End user and transit connections
  •  Signalling circuits
  • Signalling and call processor
  • Operation description: call set up and release
  •  Operation, Administration and Maintenance functions
  • Examples: switches AXE 10 et Nortel DMS 100

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ISDN SERVICES AND NETWORK

 

The integrated services digital network (ISDN) is actually used by Companies for their business voice communications. Households to get a second phone line or to access the Internet are using it also.

ISDN brings much better performances in terms of quality and rate of transmission that the traditional switched telephone network.  It supports higher speed data transmission (Fax, file transfer, Internet access).  Moreover it brings new telephone services with enriched functionalities for call management. 
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Objective

·        Introduce the services and the network architecture of the ISDN

·        Describe the end user’s connection interfaces, namely:  physical characteristics (T0, T2) and signalling

·        Present the ISDN applications within the Business Companies: voice and data communication

 

Audience

 This course is intended to technical staff to be trained on the ISDN integrated services digital network

 Duration: 2 days

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Table of Contents

 

Recall on Voice Switching
 Principles and operation of the analogue telephone network

ISDN Basics
Applications, services, main features

ISDN technical characteristics

·         Architecture and network components

·         Interfaces End user – network: S/T/U/Z; primary and basic rate interfaces (PRI, BRI)

·         Signalling: D channel, ISUP

·         Examples: France Telecom “Numéris VN4”, EuroISDN

 Applications  & ISDN Terminals

·         Telephony: PABX, telephone sets

·         Data communication: ISDN routers, Terminal Adapters

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