Telecommunications Introduction

Description

Telecomms training course description

A comprehensive tour of the telecommunications technologies and terminology currently in use, and under development.

What will you learn

• List and describe components of the PSTN.
• Explain how calls are made over the PSTN
• Compare analog and digital transmission methods.
• Describe the technologies within the transport plane.
• Recognise the benefits of extra features available in today's telephone networks.

Telecomms training course details

Telecomms training course contents

• Telephone network architecture

Handsets, local loop, distribution points, Local exchanges, main telephone switches, PBXs.

• Making a call - some basics

Telephone call components, how a telephone call works, accessing the local exchange, loop disconnect, DTMF, standards, E.164, PSTN routing, Intelligent Networks, Special Rate Services.

• Analogue vs Digital

Voice characteristics, PSTN bandwidth, analogue signalling, Digital encoding, PCM and the 64k, ADPCM and other voice compression methods.

• PBXs

PABX, Call processing, networking PBXs, PBX facilities, bandwidth, blocking probability and Erlangs, Erlang models, using Erlang tables.

• Transmission methods

Two wire transmission, 64k circuits, Nx64, E1, 2 wire to 4 wire conversion, echo, echo suppression, echo cancellers, twisted pair, coax, fibre optic, power lines, satellite systems, microwave.

• Signalling

Analogue signalling, loop start, earth calling, E&M, AC15. Digital signalling -CAS, robbed bits and E1 slot 16 signalling. Digital signalling CCS, Q.931, SS7, Q.SIG, DPNSS, DASS2.

• Transport planes

PDH, PDH issues, SDH, SDH architecture, SDH standards, SDH bit rates, SDH mulitplexors, DWDM.

• Networks

Circuit Switched Networks, TDM, Packet Switched Networks, Frame Relay, Message Switching, Circuit Switching, STDM, Cell Switching, ATM, ATM cells, ATM traffic parameters, ATM QoS, MPLS.

• Other network access

Modems, modulation, speeds, ISDN, BRI, PRI, xDSL, SDSL, ADSL.

• Other Services

Centrex, VPNs, FeatureNet, CTI, Call Processing Systems, Voice Mail, Automated Attendant Systems, Interactive Voice Response, Call Management Systems, Call Conferencing, Star Services.

• Mobile communications

3 types of wireless telephone, mobile generations, base stations, cells, GSM, GPRS, 3G, UMTS, WCDMA, 4G, LTE.

• VoIP overview

What is VoIP, VoIP benefits, What is IP? The IP header, Packetising voice, VoIP addressing, H.323, SIP, RTP. Bandwidth requirements.