About this Training Course This 5 full-day course provides detailed description of all combustion equipment and systems used in pulverized coal boilers and circulating fluidized bed (CFB) boilers including pulverized coal burning systems, coal feeder, pulverizer and classifier, pulverized coal burners, furnace and fans. This course provides also a comprehensive explanation of all boiler combustion control systems including pulverizer control system, combustion control, control of coal and air flow into the boiler, furnace pressure control, oxygen trim control, nitrogen oxides (NOx) and sulfur oxides (SOx) control, control of ammonia injection, flue gas dew point control, purge control, flame monitoring and tripping system as well as their tuning methods. All boiler control systems are covered as well in this course including drum level feedwater control, main steam and reheat steam temperature control, boiler limits and runback, sliding or variable pressure control, heat rate optimization with sliding pressure control, boiler-turbine coordinated control, etc. The course provides also detailed explanation of Boiler NFPA 85 Code (Boiler and Combustion Systems Hazards Codes) and American National Standard Institute/Instrument Society of America Code (ANSI/ISA-77-44-01-2007 Code). The burner management systems (BMS) and examples of boiler permissive starting logic and protective tripping logic will be explained thoroughly. The various methods used to calculate the boiler efficiency are covered in detail in this course including the direct and indirect methods. All the factors which affect the efficiency and emissions of pulverized coal boiler and CFB boiler will be explained thoroughly. The course covers also all the methods used to improve the efficiency of pulverized coal boilers and CFB boilers including improvement to their combustion efficiency and control systems performance. Training Objectives Boiler Combustion Equipment and Systems: Gain an in-depth understanding of all boiler combustion equipment and systems including pulverized coal burning systems, coal feeder, pulverizer and classifier, pulverized coal burners, furnace and fans Boiler Combustion Control Systems: Gain a thorough understanding of all boiler combustion control systems for pulverized coal boilers, and CFB boilers including pulverizer control system, combustion control, control of coal and air flow into the boiler, furnace pressure control, oxygen trim control, nitrogen oxides (NOx) and sulfur oxides (SOx) control, control of ammonia injection, flue gas dew point control, purge control, flame monitoring and tripping system Boiler Conventional Control Systems: Gain an in-depth understanding of all boiler conventional control systems including drum level feedwater control, main steam and reheat steam temperature control, boiler limits and runback, sliding or variable pressure control, heat rate optimization with sliding pressure control, and boiler-turbine coordinated control Boiler NFPA 85 Code (Boiler and Combustion Systems Hazards Codes) and American National Standard Institute/Instrument Society of America Code (ANSI/ISA-77-44-01-2007 Code): Learn about NFPA 85 code and ANSI/ISA-77-44-01-2007 code Burner Management System and Boiler Permissive Starting Logic and Protective Tripping Logic: Gain an in-depth understanding of burner management system and boiler permissive starting logic and protective tripping logic Boiler Efficiency Calculations: Learn how to calculate the boiler efficiency using the direct and indirect methods Factors Affecting the Efficiency and Emissions of Boilers: Understand all the factors which affect the boiler efficiency and emissions Methods Used to Improve the Efficiency of Boilers: Learn about all the methods used to improve the efficiency of pulverized coal boilers, and CFB boilers including improvement to their combustion efficiency and control systems performance Boiler Instrument and Piping Diagrams: Gain an in-depth understanding of all boiler instrument and piping diagrams CFB and Pulverized Coal Boilers Equipment and Systems: Learn about various types of equipment and systems used in CFB and pulverized coal boilers including economizers, steam drum, superheaters, air preheaters, ammonia injection systems, etc. Target Audience Engineers of all disciplines Managers Technicians Maintenance personnel Other technical individuals Course Level Basic or Foundation Training Methods Your specialist course leader relies on a highly interactive training method to enhance the learning process. This method ensures that all participants gain a complete understanding of all topics covered. The training environment is highly stimulating, challenging, and effective because the participants will learn by case studies which will allow them to apply the material taught to their own organization. Each delegate will receive a copy of the following materials written by the instructor: Excerpt of the relevant chapters from the 'POWER GENERATION HANDBOOK' second edition published by McGraw-Hill in 2012 (800 pages) Excerpt of the relevant chapters from the 'POWER PLANT EQUIPMENT OPERATION AND MAINTENANCE GUIDE' published by McGraw-Hill in 2012 (800 pages) COMBUSTION ENGINEERING FOR COAL FIRED POWER PLANTS MANUAL (includes practical information about combustion engineering for coal fired power plants - 550 pages) Trainer Your specialist course leader has more than 32 years of practical engineering experience with Ontario Power Generation (OPG), one of the largest electric utility in North America. He was previously involved in research on power generation equipment with Atomic Energy of Canada Limited at their Chalk River and Whiteshell Nuclear Research Laboratories. While working at OPG, he acted as a Training Manager, Engineering Supervisor, System Responsible Engineer and Design Engineer. During the period of time, he worked as a Field Engineer and Design Engineer, he was responsible for the operation, maintenance, diagnostics, and testing of gas turbines, steam turbines, generators, motors, transformers, inverters, valves, pumps, compressors, instrumentation and control systems. Further, his responsibilities included designing, engineering, diagnosing equipment problems and recommending solutions to repair deficiencies and improve system performance, supervising engineers, setting up preventive maintenance programs, writing Operating and Design Manuals, and commissioning new equipment. Later, he worked as the manager of a section dedicated to providing training for the staff at the power stations. The training provided by him covered in detail the various equipment and systems used in power stations. In addition, he has taught courses and seminars to more than four thousand working engineers and professionals around the world, specifically Europe and North America. He has been consistently ranked as 'Excellent' or 'Very Good' by the delegates who attended his seminars and lectures. He written 5 books for working engineers from which 3 have been published by McGraw-Hill, New York. Below is a list of the books authored by him; Power Generation Handbook: Gas Turbines, Steam Power Plants, Co-generation, and Combined Cycles, second edition, (800 pages), McGraw-Hill, New York, October 2011. Electrical Equipment Handbook (600 pages), McGraw-Hill, New York, March 2003. Power Plant Equipment Operation and Maintenance Guide (800 pages), McGraw-Hill, New York, January 2012. Industrial Instrumentation and Modern Control Systems (400 pages), Custom Publishing, University of Toronto, University of Toronto Custom Publishing (1999). Industrial Equipment (600 pages), Custom Publishing, University of Toronto, University of Toronto, University of Toronto Custom Publishing (1999). Furthermore, he has received the following awards: The first 'Excellence in Teaching' award offered by PowerEdge, Singapore, in December 2016 The first 'Excellence in Teaching' award offered by the Professional Development Center at University of Toronto (May, 1996). The 'Excellence in Teaching Award' in April 2007 offered by TUV Akademie (TUV Akademie is one of the largest Professional Development centre in world, it is based in Germany and the United Arab Emirates, and provides engineering training to engineers and managers across Europe and the Middle East). Awarded graduation 'With Distinction' from Dalhousie University when completed Bachelor of Engineering degree (1983). Lastly, he was awarded his Bachelor of Engineering Degree 'with distinction' from Dalhousie University, Halifax, Nova Scotia, Canada. He also received a Master of Applied Science in Engineering (M.A.Sc.) from the University of Ottawa, Canada. He is also a member of the Association of Professional Engineers in the province of Ontario, Canada. POST TRAINING COACHING SUPPORT (OPTIONAL) To further optimise your learning experience from our courses, we also offer individualized 'One to One' coaching support for 2 hours post training. We can help improve your competence in your chosen area of interest, based on your learning needs and available hours. This is a great opportunity to improve your capability and confidence in a particular area of expertise. It will be delivered over a secure video conference call by one of our senior trainers. They will work with you to create a tailor-made coaching program that will help you achieve your goals faster. Request for further information post training support and fees applicable Accreditions And Affliations
RADIUS training course description A fast paced hands-on introduction to RADIUS. Moves from installation and configuration through to packet analysis and accounting. Practical exercises are spread throughout the course to maintain student interest. What will you learn Configure PPP and PAP/CHAP. Install and configure RADIUS servers. Describe how RADIUS works. Setup RADIUS accounting. Analyse RADIUS packets. Troubleshoot RADIUS installations. RADIUS training course details Who will benefit: Network Administrators. Support personnel. Anyone who will be working with RADIUS. Prerequisites: Knowledge of the TCP/IP protocols would be advantageous. Duration 2 days RADIUS training course contents What is RADIUS? AAA services, Authentication, Authorisation, Accounting, local AAA services, remote AAA services, What is RADIUS? RADIUS as a protocol, RADIUS as an architecture, RADIUS as a standard. Installing RADIUS RADIUS platforms, RADIUS servers, client server communications, services, daemons. Hands on Installing RADIUS and testing with NTRadPing. Server configuration Configuring clients on the server, shared secrets, usernames and passwords. IP address pools. Hands on Configuring a server and testing with NTRadPing. Client configuration Example clients, client configuration steps, enabling RADIUS, pointing clients to the server, shared secrets, example Cisco authentication, example Cisco authorization. Hands on Configuring clients for RADIUS. How RADIUS works RADIUS architecture, RADIUS and authentication, PPP, PAP, CHAP, RADIUS SUCCESS, RADIUS FAILURE, the RADIUS protocol stack, the RADIUS protocol, the RADIUS header, RADIUS codes, RADIUS attributes, ACCESS-REQUEST example, ACCESS-ACCECPT example, CHAP example, proprietary attributes, using unassigned type codes, RADIUS attribute 26, Cisco specific attributes. Hands on Analysing RADIUS packets, configuring PPP CHAP to work with RADIUS. RADIUS accounting Simplified operation, Accounting codes, Accounting attributes, client and server configuration for accounting. Hands on Configuring RADIUS accounting. RADIUS architectures Traditional architecture, multiple RADIUS servers for resilience, Proxy RADIUS servers, Realms, RADIUS in VPNs, RADIUS with 802.1x. Hands on Using multiple RADIUS servers, Proxies. Troubleshooting RADIUS General problem solving, basic tools, RADIUS troubleshooting, Common configuration errors, log files, RADIUS design and performance. Hands on Fixing RADIUS problems.
Junos Intermediate Routing training course description This course provides students with intermediate routing knowledge and configuration examples. The course includes an overview of protocol-independent routing features, load balancing and filter-based forwarding, OSPF, BGP, IP tunneling, and high availability (HA) features. Junos Intermediate Routing (JIR) is an intermediate-level course. What will you learn Describe typical uses, configure & monitor static, aggregate, and generated routes. Configure and share routes between routing instances. Explain the operations of OSPF. Describe BGP and its basic operations. Configure and monitor GRE and IP-IP tunnels. Junos Intermediate Routing training course details Who will benefit: Engineers responsible for configuring and monitoring devices running the Junos OS. Prerequisites: Intro to the Junos Operating System Duration 2 days Junos Intermediate Routing training course contents Protocol-Independent Routing Static Routes Aggregated Routes Generated Routes Martian Addresses Routing Instances Lab 1 Protocol-Independent Routing Load Balancing and Filter-Based Forwarding Overview of Load Balancing Configuring and Monitoring Load Balancing Overview of Filter-Based Forwarding Configuring and Monitoring Filter-Based Forwarding Lab 2 Load Balancing and Filter-Based Forwarding Open Shortest Path First Overview of OSPF Adjacency Formation and the Designated Router Election OSPF Scalability Configuring and Monitoring OSPF Basic OSPF Troubleshooting Lab 3 Open Shortest Path First Border Gateway Protocol Overview of BGP BGP Attributes IBGP Versus EBGP Configuring and Monitoring BGP Lab 4 Border Gateway Protocol IP Tunneling Overview of IP Tunneling GRE and IP-IP Tunnels Implementing GRE and IP-IP Tunnels Lab 5 IP Tunneling High Availability Overview of High Availability Networks Graceful Restart Graceful RE Switchover Nonstop Active Routing BFD VRRP Lab 6 High Availability Appendix A: IPv6 Introduction to IPv6 Routing Protocol Configuration Examples Tunneling IPv6 over IPv4 Lab 7 (Optional) IPv6 Appendix B: IS-IS Overview of IS-IS Overview of IS-IS PDUs Adjacency Formation and DIS Election Configuring and Monitoring IS-IS Basic IS-IS Troubleshooting Lab 8 (Optional) IS-IS Appendix C: Routing Information Protocol Introduction to RIP RIP Configuration Examples Monitoring and Troubleshooting RIP
MRTG training course description A hands on course focusing on the installation, configuration and use of the MRTG network monitoring and graphing tools. What will you learn Install MRTG. Configure MRTG. Use MRTG to monitor networks. MRTG training course details Who will benefit: Anyone working with MRTG. Prerequisites: Total SNMP for engineers Duration 2 days MRTG training course contents What is MRTG? Network monitoring, review of SNMP. What MRTG does do, what MRTG doesn't do, MRTG architecture, MRTG components. Hands on configuring SNMP support on network devices, configuring extended SNMP support on Windows. Installing MRTG Configuring MRTG tasks, .cfg files, index.html files, running MRTG tasks, instances. Hands on Configuring and running MRTG tasks. MRTG tasks Configuring MRTG tasks, .cfg files, index.html files, running MRTG tasks, instances. Hands on Configuring and running MRTG tasks. MRTG graphs Daily, weekly, monthly, yearly, MRTG database support, RRDTOOL. Hands on MRTG graphs. Using MRTG MRTG examples, custom SNMP OIDs, using the MRTG configuration reference. Hands on MRTG examples. RRDTOOL Installing RRD database support, MRTG instances with the RRD database, RRD database structure, resizing and extending the database. Exporting database records into plain text and XML formats, on demand MRTG graphs using the database. Hands on Using MRTG with RRD database support. Alternatives to MRTG MRTG strengths and weaknesses, scalability, cricket, cacti, other SNMP tools.
Sockets programming training course description A hands on course for programmers using Sockets. It is important to recognise that the course assumes that delegates are already familiar with TCP/IP and Python. Practical exercises follow all the major theory sessions. What will you learn Read Python programs which use Sockets. Write Python programs which use Sockets. Debug Python programs which use Sockets. Sockets programming training course details Who will benefit: Programmers working with network applications. Prerequisites: TCP/IP foundation for engineers Python for network engineers Duration 2 days Sockets programming training course contents What is a socket? Review of IP, ICMP, UDP vs TCP, IP addresses, protocol numbers, ports. API's, UNIX I/O, sockets. SOCK_STREAM, SOCK_DGRAM. Hands on Compile and run code. The systems calls Clients and servers, structs, socket(), bind(), connect(), listen(), accept(), send(), recv(), sendto (), recvfrom(), close(), shutdown(), getpeername(), gethostname(). Hands on Walk through of example client and server code. First code TCP connections, passive opens, active opens. Hands on Write a simple 'hello world' server and client. Application protocols User character stream, ASCII turn taking, binary protocols. Hands on Raw SMTP, Writing a mail client. Clients Concurrency, polling, threads, event driven programming. Hands on Conferencing application. Servers Concurrency, stateful, stateless. Forks and execs. inetd. Hands on Running servers with and without inetd, chroot jails, conferencing server modifications. Advanced techniques Blocking, select(), partial send(s). Raw sockets, example sockets using Java, Perl and PHP. Hands on A broadcast application.
About this Course Batteries are going to play an increasingly important role in the energy grid. An increasing number of developers are looking to add battery storage systems (BESS) into their existing projects. However future cash flows are highly uncertain and they are often unsure exactly how battery technology can be monetised. A strong revenue model requires stacking of different revenue sources. As the share of variable renewable sources in electricity systems further increase, battery systems are expected to play a growing role by providing frequency control and operational reserves as well as for wholesale arbitrage, while helping reduce grid integration costs. The more volatile electricity prices are, the greater the earning potential of batteries trading electricity on various electricity markets. BESS can generate revenue streams in several different ways; through a frequency response contract with the TSO, by providing grid services in other ways or by arbitrage through buying cheap power and selling power for a higher price in a liquid wholesale market. Because batteries are efficient, the round trip efficiency is also high. They can spread arbitrage trading much better than other storage types and in many cases, other asset classes. For companies that combine a battery with other tasks, for example to store power from their own panels, or to avoid a costly heavy power connection, the investment is less risky than for those that purely focus on arbitrage trading. It is uncertain whether electricity prices will fluctuate more violently in the coming years, or whether the peaks will actually level off. During this highly interactive training, the trainer will provide you with the latest insights and best practices on how to obtain the maximum economic beneï¬ts when participating with BESS in the electricity market. Training Objectives By the end of this course, the participants will be able to: Discover the different BESS battery technologies and their impact on the grid Understand the role of storage in providing flexibility to the power system Examine the potential revenue streams from BESS models Learn how profit can generated with BESS trading strategies Determine how to optimize the value from BESS projects Find out how to combine BESS with renewable PPAs Target Audience Professionals and executives from Power Utilities, Energy Companies, Financial & Investment Banks, Renewable Power Project Developers, Transmission System Operators and Energy Industry Regulators will find this training course useful. Electricity Marketing and Traders New Venture or Business Development Executives Corporate Finance and Treasury Executives Audit and Risk Management Executives Power or Utility Market Research Analysts Investment Managers for Renewable Power Projects Origination Professionals Regulation, Compliance and Documentation Officers Lawyers and Accountants Power Transmission and Distributions Engineers Trainer Our key expert is a skilled and accomplished professional with over 25 years' of extensive senior management / board level experience in the energy markets worldwide. Next to advising energy companies, banks, consultants and regulators regarding PPAs, our key expert has also conducted several highly successful training courses about Power Purchase Agreements, Power Project Finance, IPPs, and Project Risk Management to over 1,000 high level participants from Asia, Africa, Europe and Middle East. He was a member of the expert commission of the Dutch Government for 2 offshore wind parks, Hollandse Kust (zuid) Wind Farm Zone Sites 3 and 4 that advised on which of the 5 applicants did provide the best security and solutions associated with the electricity and green certificate prices, the construction and operational risks of the project. POST TRAINING COACHING SUPPORT (OPTIONAL) To further optimise your learning experience from our courses, we also offer individualized 'One to One' coaching support for 2 hours post training. We can help improve your competence in your chosen area of interest, based on your learning needs and available hours. This is a great opportunity to improve your capability and confidence in a particular area of expertise. It will be delivered over a secure video conference call by one of our senior trainers. They will work with you to create a tailor-made coaching program that will help you achieve your goals faster. Request for further information post training support and fees applicable Accreditions And Affliations
Mobile IP training course description A detailed examination of the protocols and architecture of Mobile IP. What will you learn Recognise the benefits of ADSL. Configure and troubleshoot IS-IS. Explain how IS-IS works. Describe the use of Level 1 and Level 2. Design IS-IS networks. Mobile IP course details Who will benefit: Technical staff wanting to learn DNS.Network Administrators. Support personnel. Prerequisites: TCP/IP Foundation Duration 2 days Mobile IP course contents Introduction Quick review of IP, What is Mobile IP? What Mobile IP provides, Mobility requirements, Where Mobile IP is required, where mobile IP is not required, DHCP as an alternative, Proxy ARP as an alternative. Architecture Mobile node, home network, home agent, Foreign agent, Fixed home address, Care of address, Correspondent node, Tunnelling. How Mobile IP works Using two addresses, issues with TCP, discovering the care of address, registering care of address, tunnelling the care of address. The protocols involved. Issues with Mobile IP Routing inefficiencies, Security and firewalls, ingress filtering, QoS. MIP and IPv6 Stateless address configuration, Neighbour discovery, miscellaneous.
4G training course description This course is designed to give the delegate an understanding of the technologies used within a 3G UMTS mobile network. During the course we will investigate the UMTS air interface and the use of Wideband-Code Division Multiple Access (WCDMA) to facilitate high speed data access, together with HSPA to offer mobile broadband services. We will describe the use of soft handover rather than hard handover procedures and soft capacity sharing. The course includes a brief exploration of the UMTS protocol stack and the use of PDP Context and QoS support features. What will you learn Explain the 3G UMTS architecture. Describe the role of a Drifting & Serving RNC. Explain the use of ARQ & HARQ for mobile broadband. Describe how IMS integrates into the architecture. Describe the use of Media Gateway Controllers. Identify the temporary identities used within 3G UMTS. 4G training course details Who will benefit: Anyone working within the telecommunications area, especially within the mobile environment. Prerequisites: Mobile communications demystified Telecommunications Introduction Duration 2 days 4G training course contents LTE Introduction The path to LTE, 3GPP. LTE to LTE advanced. LTE Architecture The core, Access, roaming. Protocols: User plane, Control plane. Example information flows. Bearer management. Spectrum allocation. LTE technologies Transmission, reception, OFDMA, multiple antenna, MIMO. LTE Air interface Air interface protocol stack. Channels, Resource Grid, cell acquisition. Up and downlink controls. Layer 2 protocols. Cell acquisition Power on, selecting networks and cells. RRC connection. Attach procedure. Mobility management Roaming, RRC_IDLE, RRC_CONNECTED, cell reselection, handover, interoperation with UMTS and GSM networks. Voice and text IMS, QoS, policy and charging.
Broadband access training course description ADSL is a broadband technology providing fast Internet access (amongst other applications) over existing telephone lines. This course covers an overview of the DSL family, what ADSL is through to how ADSL works. What will you learn Describe what ADSL is. Describe how ADSL works. Describe the ADSL architecture. Recognise the limitations of ADSL. List the elements required for an ADSL installation. Broadband access training course details Who will benefit: Network engineers and anyone who will be working with ADSL. Prerequisites: Intro to data communications & networking Duration 2 days Broadband access training course contents What is ADSL? Broadband definitions, OSI layer 1, ADSL services, WANS. ADSL features: always on, point to point, Asymmetric, speeds. ADSL benefits, xDSL family, standards, history, example DSL forum documents. ADSL architecture The big picture, The PSTN and telephones, Digital and analogue, PSTN and modems, ADSL vs. modem speeds, Block 1: Customer premises, Block 2: The last mile, Block 3: The exchange, Block 4: the core network. Customer premises Splitters, micro filters, splitter architectures, Splitterless ADSL, ADSL modems, USB, ADSL routers. The local loop ADSL PHY, Some basics, ADSL margins, speed implications, distances, RADSL, Line testing, whoosh tests, line coding, multiple channels, FDM, echo cancellation, Modulation: AM, FM, PM, QAM, QAM constellations, DMT, CAP, Framing, Superframes, fast data mode, interleaved mode, RADSL revisited. The exchange Local exchange ADSL items, DSLAMs, ADSL racks, Contention. The core network The role of the core network, ATM, ATM VPI/VCI, ATM cells, ATM layers, AAL5, RAS, Home gateways. ADSL and the higher layers Layer 2 choices, PPPoA, PPP, CHAP, Layer 4 and above, ADSL and ATM. Installing and configuring ADSL Choosing providers, line activation, hardware requirements, Configuring layer 1 and layer 2, Configuring IP. Summary ITU ADSL standards
ADSL training course description An introduction to ATM. What will you learn Recognise the benefits of ADSL. Describe what ADSL is. Describe how ADSL works. Describe the ADSL architecture Recognise the limitations of ADSL. List the elements required for an ADSL installation. ADSL training course details Who will benefit: Network engineers and anyone who will be working with ADSL. Prerequisites: Intro to data comms & networking Duration 2 days ADSL training course contents What is ADSL? Broadband definitions, OSI layer 1, ADSL services, WANS. ADSL features: always on, point to point, Asymmetric, speeds. ADSL benefits, xDSL family, standards, history, example DSL forum documents. ADSL architecture The big picture, The PSTN and telephones, Digital and analogue, PSTN and modems, ADSL vs. modem speeds, Block 1: Customer premises, Block 2: The last mile, Block 3: The exchange, Block 4: the core network. Customer premises Splitters, micro filters, splitter architectures, Splitterless ADSL, ADSL modems, USB, ADSL routers. The local loop ADSL PHY, Some basics, ADSL margins, speed implications, distances, RADSL, Line testing, whoosh tests, line coding, multiple channels, FDM, echo cancellation, Modulation: AM, FM, PM, QAM, QAM constellations, DMT, CAP, Framing, Superframes, fast data mode, interleaved mode, RADSL revisited. The local loop ADSL PHY, Some basics, ADSL margins, speed implications, distances, RADSL, Line testing, whoosh tests, line coding, multiple channels, FDM, echo cancellation, Modulation: AM, FM, PM, QAM, QAM constellations, DMT, CAP, Framing, Superframes, fast data mode, interleaved mode, RADSL revisited. The exchange Local exchange ADSL items, DSLAMs, ADSL racks, Contention. The core network The role of the core network, ATM, ATM VPI/VCI, ATM cells, ATM layers, AAL5, RAS, Home gateways. ADSL and the higher layers Layer 2 choices, PPPoA, PPP, CHAP, layer 4 and above, ADSL and IP, ADSL and ATM. Installing and configuring ADSL Choosing providers, line activation, hardware requirements, Configuring layer 1 and layer 2, Configuring IP. Summary ITU ADSL standards.