Telecommunications Introductory

Overview Comprehensive introduction to Telecommunications. Duration - 2 Days.

Who will benefit

Anybody who has an interest in the latest technological development and convergence of telephony and data.

Prerequisites

Introduction to Telecommunications or an understanding of Telecommunications technology.

By the end of the course delegates will be able to describe:

By the end of the course delegates will be able to describe: • Basic telephone, data, mobile, & local area network systems • The types of signal carried over a network, DASS2, Q.931, Q.2931, ITU SS7, Q.SIG, etc. • How speech is converted into digital form using PCM, ADPCM, CVSD, CELP, RPE-LTP/LPC, etc. • Time-space-time switching • Functions of PABXs, PCATXs, PAXs, Centrex, VPNs, CTI, ACD, COR, COS • The operation of ISDN • LAN technologies • The new xDSL transmission technologies • Design (in syndicate) a telecom network with remote concentrator units, ISDN, switches, transmission systems PDH & SDH, modems, satellites.

Course Content

Overview of telecommunications A basic telecomm network, types of signal carried,Simplex, half duplex & full duplex, frequency & bandwidth, Analogue & digital comparisons, flexibility of a digital system, noise immunity, components of speech,Analogue propagation, amplified signals, digital propagation, diversity of transmission paths, advantages & disadvantages of digital transmission, the telephone transmitter,The telephone receiver, dial key pad, digital telephones,BSI Standards, the local access network,Concentration in the local loop, UK public fixed link operators, concentration in the local access, the local digital exchange, the ETSI V5.1 & v5.2 interface, the trunk network, the international network, telecommunication networks. Transmission Speech, noise, impulse noise, crosstalk, white noise,2- to 4-wire conversion, echo, frequency and time division Multiplexer in a transmission network,Pulse code modulation (PCM), time division multiplexing,Digital transmission using analogue circuits, signal compression, Delta modulation (DM), Adaptive Differential PCM (ADPCM), Continuously Variable Slope Delta (CVSD), Codebook Excited Linear Prediction (CELP), Low Delay CELP (CD-CELP), Regular Pulse Excitation-Long Term Predictive Coding (RPE-LTP) with Linear Predictive Encoding (LPC), Plesiochronous Digital Hierarchy (PDH),Synchronous Digital Hierarchy (SDH), the PDH mountain, SDH multiplexer hierarchy, transmission media, cable, coaxial cable, fibre optic systems, submarine cables, Radio frequency bands, propagation, HF, VHF, UHF, tropospheric forward scatter, microwave, laser beams, transmission equipment in a network. Exchanges & Switching Stored program control exchanges, Line Cards,Time & Space switching, high order transmission equipment, typical public network switching hierarchy,Typical distribution scheme, digital cross connect systems, grooming, PABX derivatives, key telephone systems,Private Automatic Exchange (PAX), Private Circuit Automatic Tandem PABXs (PCATX), Main & Satellite PABX, CENTREX, Virtual Private Networks (VPN), blocking/non-blocking, automatic route selection, Class Of Restriction (COR), Class Of Service (COS), Automatic Call Distribution (ACD), Computer Telephony Integration (CTI), packet switching (X.25), the world Telecommunications Network, the world numbering plan, international signalling systems. Transmission Networks Digital subscribers line technologies, copper access transmission technologies, DSL, HDSL, SDSL, ADSL, VDSL, the new power line technology, wireless in the local loop, fibre in the local loop, the ETSI V5.1 & V5.2 local access interfaces, Passive Optical Networks (PONs), Frame Relay, limitations of current networks, new telecommunications services. Overview of ISDN Euro-ISDN, Euro-ISDN applications, Basic Rate Access (BRA) and Primary Rate Access (PRA), ITU Reference points, the basic and primary rate "T" interfaces, the "S" interface, the user's perspective of ISDN, the PTO's perspective of ISDN. Signalling Inter exchange signalling, digital signalling systems,Basic & primary rate signalling, Q.931/DSS1, Q.Sig/PSS1, Q2931/DSS2, Digital Access Signalling System No 2 (DASS2), Digital Private Network Signalling System No 1 (DPNSS1), Q.Sig diverted call example, Path replacement/Route Optimisation example, Signalling System No7 (ITU SS7), Intelligent Network (IN) examples, Digital subscribers line technologies, copper access transmission technologies, DSL, HDSL, SDSL, ADSL, VDSL, the new power line technology, Wireless in the local loop, fibre in the local loop, The ETSI V5.1 & V5.2 local access interfaces, Passive Optical Networks (PONs), Frame Relay, Limitations of current networks, new telecommunications services. Data Communications Physical transmission, coding systems, Simplex & duplex transmission, serial & parallel transmission, synchronous & asynchronous transmission, modems, DTE-DCE interface, the ITU V.24 interface, Line drives & baseband modems, data rates. Local Area Networks (LANs) LAN topologies, star, bus, tree, ring & modified ring, Ethernet LANs, Carrier Sense Multiple Access/Collision Detection (CSMA/CD), Repeaters, bridges and routers, the Integrated Services PABX (ISPBX), token passing, token ring topology. Mobile Communications Cellular radio principles, access to the cellular system, cellular operation and control techniques,The analogue cellular systems, digital cellular systems, The Mobile Switching Centre (MSC), Digital cellular systems, Global System for Mobile communications (GSM), Location registers, Time Division Multiplexing, Special features of GSM, GSM performance, International call roaming with GSM,Personal Communication Networks (PCNs), Cordless telephones 1,2 & 3, Digital European Cordless Telephone (DECT), Private mobile radio, radio paging, Low Earth Orbiting Satellites (LEOs).