TRANSMISSION SECTION
PDH-SDH TRANSMISSION &
MULTIPLING
The
Optical fibre is modifying in depth the architecture of transmission networks
.
New optical technologies are appearing with new high speed new multiplexing schemes : SDH, SONET.
Optical SDH self-healed loops are
spreading rapidly in the transmission long haul transmission network, but also
in the distribution network MAN and in the subscriber access loops.
This course is intended to present these new optical transmission technologies but also the traditional PDH multiplexing, which is still used to provide lower speed transmission and multiplexing.
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Course Objective
Provide the basic technical knowledge on: · PDH multiplexing · Transmission on Optical fibre · SDH/SONET Multiplexing · SDH/SONET Optical loops and networks |
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AudienceAny person, with a technical profile, wishing to improve its knowledge in
transmission technologies Duration: 1 day |
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Table of
Contents PDH
multiplexing · PDH hierarchy: E1-E2-E3-E4,
DS1/T1-DS3/T3 · The standards: G703-704 · Multiplexing structures: E1, T1, ( IT16 sub-multiplexing) , E3, T3, E4 · Operation, administration and maintenance: CRC4 · PDH Equipments overview: multiplexers, cross-connects
Optical Transmission · Optical Fibre characteristics, single or multi-mode, standards UIT · Optical transmission Equipments, transmission performances SDH/SONET NETWORKS · PDH multiplexing limitations · LSDH/SONET hierarchy, the ITU standards · Multiplexing structures and framing: RSOH, MSOH, POH · SDH Network basic elements : repeaters, multiplexers, ADM, Cross Connect · SDH Network architectures and topologies: point to point, Rings · Operation, administration and maintenance: F1, F2, F3 flows, MIB, performances · SDH Protection: multiplex, path, and optical ring. |
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Return
Optical transmission combined with SDH/SONET TDM
multiplexing has drastically increased the transmission bit rate in backbone
and metropolitan networks.
However the SDH technology is currently limited to 2.5/10
Gbit/s on a single optical fibre.
Higher bit rates are required in the long haul networks to support the
constantly increasing Internet traffic.
A new multiplexing technology has been invented and is being deployed: optical
multiplexing, so called WDM (Wavelength Division Multiplexing)
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Course Objective Provide the basic technical
knowledge on: · WDM transmission and multiplexing principles · WDM Network Architecture · WDM Equipments : amplifiers, multiplexers, OADM, Cross connect · Operation, administration and maintenance |
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AudienceAny person, with a technical profile, wishing to improve its knowledge in
transmission technologies Prerequisite : Duration : 1 day |
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Table of Contents Fiber Optics suitable for WDM · Critical Optics Parameters for WDM · Optical Fibres for WDM – the ITU standards · Upgrading of existing Fibres WDM multiplexing technology · SDH Limitations, Very High Speed transmission requirements · WDM multiplexing Structure, the ITU standards · Operation, administration and maintenance: supervision channel, MIB WDM Networks · WDM Network Elements: amplifiers, multiplexers, OADM, cross connect · WDM Network Topologies: ring, mesh, star · Protection Techniques in WDM · Operation, administration and
maintenance at network level · Other WDM network uses: Gigabit Ethernet over WDM, IP/MPLS over WDM |
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XDSL LOCAL LOOP &
UNBUNDLING REGULATION
The
data transmission rate on telephone lines has been so far limited, for
the PSTN to 56 Kbit/s, for the ISDN to 128
Kbit/s. It starts to be too slow rate for Internet access, taken into account
the richer content of Web sites.
The new XDSL Technologies drastically increase the transfer rate on telephone
lines up to 2 Mbit/s currently, and rather soon to 10 Mbit/s.
As a consequence the MAN distribution part of the telephone network has to be
redesigned to cope with a 10-fold data rate increase. New ATM and/or IP optical
networks are being used for that purpose.
Another consequence is to change the deregulation rules in the telephone
networks and to set a new regulation: the local loop unbundling.
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Course Objective
Provide the basic technical knowledge on: · Local loop unbundling regulations · XDSL Transmission and related equipements · ATM & IP distribution XDSL networks · XDSL applications |
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AudienceAny person, with a technical profile, looking for training in Local Loop XDSL transmission technologies Prerequisite: Basic Transmission knowledge Duration: 2 days |
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Table of Contents Introduction · High speed access end user’s requirements : professional and consumer · Applications: Internet, Intranet, Extranet, Multimédia · High speed access networks general Architecture · The different local loop technologies : cable, fixed wireless, XDSL Local Loop Unbundling · Unbundling regulations in France · The different options: total, partial and virtual circuit unbundling, · ART regulation · Unbundling in Europe and USA France Telecom Unbundling Offer · Local loop total access · Local Loop shared access · Virtual circuit Access : Turbo DSL and Connect
ATM XDSL Transmission characteristics · Telephone Lines technical characteristics and their consequences on XDSL · Description of XDSL transmission techniques : ADSL, SDSL, VDSL · XDSL Performances on telephone lines · XDSL modems and DSLAMs XDSL distribution Network: ATM · ATM distribution network Architecture · ATM statistical multiplexing, ATM QoS (CBR, VBR, UBR) · Example: The TURBO DSL service from France Telecom · Design and implementation solution : DSLAM, ATM switch, CPE XDSL distribution Network: IP · IP distribution network Architecture · Internet XDSL Access protocols : PPPoA, PPPoE, L2TP · Example: The TURBO IP service from France Telecom · Design and implementation solution: BAS, CPEs XDSL Products and Services on the Market · XDSL products review: DSLAM, Modems, Routers, PC Software · Telcos and ISP service offering review XDSL Applications · Leased Lines replacement: Access to FR, IP VPN networks · IP remote Access : Internet, Intranet · VoDSL : Voice over DSL |
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