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This core training - and our superb instructors - consistently receive rave reviews on evaluations.
Many attendees tell us that this is training they wish they’d had years ago!
You'll gain key concept-level knowledge that you can't get on the job, from magazines or vendors.
|The first module covers the Public Switched Telephone Network, the telecom business, carriers, digital voice transmission, T1, SONET optical networking and backbones, wireless, equipment and call centers the groundwork for understanding everything.|
| 1. Fundamentals of Telephony|
It all begins with the Public Switched Telephone Network and Plain Ordinary Telephone Service. We'll establish with a model for the PSTN, explaining analog circuits, loops, trunks, remotes, circuit switching and other telephony buzzwords and jargon. We’ll understand how the network is organized into access, switching and transmission. We’ll cover Centrex and traditional PBX, then understand Voice over IP (VoIP) concepts and components, soft switches and SIP trunking.
B. The Public Switched Telephone Network (PSTN)
C. Analog Circuits
D. What is Sound?
E. The Voiceband
F. Plain Ordinary Telephone Service (POTS)
G. DTMF Address Signaling
H. Signaling System 7 (SS7)
I. Network Architecture: Access, Switching, Transmission
J. Telephone Switches
K. Traditional PBX and Centrex
M. SIP, Soft Switches, Hosted PBX and IP Centrex
N. SIP Trunking
With the fundamentals in place, we’ll cover digital. You will learn what is really meant by “digital”, how voice is digitized to 64 kb/s, and MP4 digital video. We’ll complete the story understanding how the resulting bits are communicated using binary pulses on copper and fiber.
B. Continuous Signals, Discrete Signals
C. Voice Digitization (Analog → Digital Conversion)
D. Voice Reconstruction (Digital → Analog Conversion)
E. Voice Digitization: 64kb/s G.711 Standard
F. Digital Video: H.264 / MPEG-4 Standard
G. Implementing Digital: Binary Pulses
3. The Telecommunications Industry, Competition and Interconnect
In this chapter, you will gain a solid understanding of the telecommunications business and how it is structured, including telephone companies, local and long-distance, and how these companies compete and interconnect. You will understand how each organization fits into the picture, including ILECs, IXCs, resellers, CLECs, collocations, regional rings, POPs and MANs.
B. AT&T and Verizon
C. Canadian Telephone Companies
D. PSTN Switching Center Hierarchy
E. 1984: LECs, IXCs and POPs - Last Mile: Switched Access from ILEC
F. Competitive Carrier - Last Mile: Dedicated Line from ILEC
G. Competitive Carrier - Last Mile CLEC: Collocation plus ILEC Dark Fiber
H. Competitive Carrier Network Model: Regional Rings, POPs and MANs
4. The Cloud
Next, we will demystify the Network Cloud. You will learn why people draw a picture of a cloud to represent a network, then most importantly, what is inside the cloud and understand what’s really going on. You will learn about the three basic kinds of network services available, the equipment used to implement each, and how services are actually provided… highly useful knowledge when planning, ordering, troubleshooting, auditing, or otherwise dealing with carrier services.
B. Inside the Network Cloud
C. Network Equipment: How and Where Each is Used
D. Summary: How Services Are Provided
We'll complete the first part of the course, and the first day, with wireless, concentrating on cellular. You will learn the components and basic principles of operation of mobile networks, tracing a call from end-to-end from mobile phone to landline. You’ll understand the requirements for coverage, capacity and mobility, and why cellular radio systems are used. We’ll cover voice over cellular, then the exploding area of “data” over cellular, which is actually Internet access. With the concepts in place, we’ll sort out different cellular technologies and generations: without bogging down on details, you will learn the differences between 2G GSM/TDMA, 3G 1X, UMTS and HSPA CDMA, and 4G LTE with its OFDM. We’ll conclude with WiFi, more properly called 802.11 wireless LANs, and satellite communications.
B. Mobile Networks
D. Second Generation: Digital Cellular
E. Digital Cellular: Voice
F. Digital Cellular: Data = Internet Access
G. Spectrum-Sharing Technologies: FDMA, TDMA, CDMA, OFDM
H. 3G: 1X, UMTS, HSPA (CDMA)
I. 4G LTE and OFDM
J. Dynamic Assignment of Subcarriers
K. Wireless LANs: WiFi & 802.11 Standards
Course 101 Module 2: Understanding Data Communications
12. The OSI Layers and Protocol Stacks
There are so many functions that must be performed to interoperate systems, a structure is required to organize the functions so that separate issues can be treated separately. We’ll begin the third part of the course, and the third day with the most commonly-used structure, the ISO Open Systems Interconnection 7-Layer Reference Model. You'll learn what a layer is, the purpose of each layer, examples of protocols like TCP and IP used to implement layers, and gain a true understanding of how a protocol stack works for applications like web surfing and VoIP.
13. IP Networks, Routers and Addresses
With a structure in place for discussing what we need to do, we’ll understand how networks are implemented. We begin with the simplest framework, a private network, to understand routing and bandwidth on demand. We’ll introduce the term Customer Edge router and examine the functions performed by a router. Then we will cover IPv4 addressing: IPv4 address classes, static vs. dynamic addresses and DHCP, public and private addresses and NAT. Then we’ll review IPv6, and how IPv6 addresses are allocated and assigned, and types of IPv6 addresses.
14. MPLS and Carrier Networks
IP packets will be used to carry everything, including phone calls and television. But IP in itself does not include any Quality of Service (QoS) mechanism, no way to prioritize or manage traffic. This is implemented with MPLS. In this chapter, you’ll learn the basics of carrier packet networks, identifying Provider Edge (PE), Customer Edge (CE), access and core, and the important concept of a Service Level Agreement. Then you’ll gain a practical understanding of the purpose and functioning of MPLS, virtual circuits and traffic classes, previous methods Frame Relay and ATM, then MPLS and how it is used to implement business customer services, differentiated services and Class of Service (CoS), service integration and traffic aggregation in the core.
15. The Internet
The Internet is a giant collection of interconnected IP networks called Autonomous Systems across which the public can communicate IP packets. In this chapter, we’ll understand what an ISP is and how they connect to others via transit and peering, then review how DNS, HTML, HTTP, clients and servers work together to form the Web on top of the Internet. We’ll conclude by understanding telephone calls over the Internet and secure VPNs over the Internet.
16. Wrapping Up
The final chapter brings all of the concepts together with a top-down review. You’ll learn valuable insight into telecom project management and methodology, and review telecom, datacom and networking technologies, services and solutions. We’ll conclude with a peek at the future of telecommunications, where the telephone network and Internet become the same thing.
Teracom's Understanding Voice over IP is geared for non-technical professionals needing to understand VoIP: jargon, buzzwords, concepts and components, technologies and architecture choices, why an organization would implement VoIP – and how to go about doing it.
1. VOIP COMPONENTS, SYSTEMS, STANDARDS, JARGON AND BUZZWORDS
4. THE NUTS AND BOLTS OF PACKETIZED VOICE
In this chapter, you’ll understand what exactly packetized voice is, how it happens and the standards and protocols used. You’ll learn about codecs and compression, and the factors affecting sound quality. We’ll listen to sound clips of impairments, and provide you with a practical checklist of tips and recommendations for ensuring success.
5. SIP TRUNKING, CARRIER NETWORKS, SERVICES AND INTERCONNECT
We round out the Voice over IP technology overview with connecting a VoIP system to the world, via a carrier like AT&T. We’ll begin MPLS, used by carriers for traffic management, as a Quality of Service (QoS) mechanism to meet Class of Service (CoS) performance guarantees in Service Level Agreements (SLAs). We’ll sort out VPN backbones vs. Internet VPNs. You’ll learn about native VoIP services from carriers, and the significant savings in costs compared to connecting at the DS0 level. We’ll finish with legacy system integration. The final three lessons are bonus detailed reference material for those who need it.
6. READINESS ASSESSMENT
This chapter wraps up the Voice over IP part of the course, listing a number of practical issues that must be considered when planning a VoIP system. Not only might these lessons help avoid hidden issues becoming career-limiting surprises, they also serve as a good excuse to review the material covered so far.
The more things that are connected, the more ways there are for criminals to make money. In this extensive chapter, you'll get a comprehensive overview of security, and an understanding of the tools and techniques used to implement security. We'll begin with an overview, then identify the valuable targets. Next, we’ll explore the measures taken and best practices in the different areas of security – network security: filtering and firewalls; computer / operating system security: passwords, viruses, PCI compliance; information and communication security: public and private key encryption, digital signatures, digital certificates, IPsec; application security – examine an attack from the web to an SQL database step-by-step; and finally voice and video over IP security, including how yes, your microwave oven could be watching you.
8. NEXT-GENERATION: 5G AND THE INTERNET OF EVERYTHING
We complete the course with discussion of upcoming technologies. First up is 5G wireless. We’ll understand how 5G is different than 4G – promising gigabits per second for many people, and how it will be deployed and used, including traffic control systems and driverless transport trucks, bandwidth for everyone at stadiums, and free ultra-fast WiFi from Google and Facebook in cities. Second up is the IoT. Non-technical people who write articles have been using the term “Internet of Things”… but this is missing the bigger picture. In the future, EVERYTHING will be connected, the Internet of Everything. We’ll identify things that will be connected, then split into groups to identify the associated benefits and risks, and who is going to make money. Then we’ll cover some practical issues: discussing how everything can get a computer, an operating system and an application inside it, plus a communication link… and power. We’ll finish off with medical applications, home automation and the Software Defined Telecom Network.
APPENDIX A: VOIP VENDOR PROFILES
A survey of “hardware” vendors, softswitch vendors and service providers, chosen to be representative of all of the vendors in their category is included as a bonus section. You’ll learn about the different philosophies of major players, their key products, latest trends and developments.
APPENDIX B: BONUS SECTION - VOIP PROJECT MANAGEMENT
A comprehensive template for managing a VoIP project is included as a bonus section in the course book. You’ll learn how to do it the “right” way, from analyzing requirements to running trials, evaluating and selecting a vendor, rollout, acceptance testing and more. This project management guide is packed with practical tips and checklists that can be put to immediate use. If you are about to embark on a VoIP deployment, this might well be worth the price of the course all on its own.
A three-day vendor-independent training course covering all aspects of Voice over IP and the network it runs on. Specifically designed for non-engineering professionals, this course will fill in the gaps and get you up to speed on all of the fundamental concepts and technologies involved with Voice over IP and the network it runs on:
Teaching Modules & Course Book Chapters
4. THE MANY DIFFERENT IMPLEMENTATIONS OF VOIP
“Voice over IP” can happen in many different ways. One by one, we’ll review the many flavors of VoIP, comparing and contrasting the various implementations and architecture choices. Starting with Internet telephony, we will then understand VoIP at the telephone company, how VoIP connects to older systems, and new services like SIP Trunking. We will compare and contrast choices for a VoIP system: getting it from the phone company; buying a call manager / softswitch; renting a Hosted PBX; and cloud solutions. You’ll gain the knowledge to confidently differentiate VoIP architectures and discuss pros and cons of options.
6. SIP AND SOFTSWITCHES
SIP is the open, standard protocol for setting up Voice over IP telephone calls. All VoIP systems that purport to be “compatible” or “standards-based” must implement the Session Initiation Protocol. SIP defines the procedure and messages to set up a phone call – or any other kind of communication. In this chapter, you’ll learn what exactly setting up a VoIP telephone call entails, understand what SIP is, how it works, demystify jargon like proxy server, registration and location server, understand how SIP fits in with softswitches and call managers, and trace the establishment of an IP phone call step by step. At the end of this, you’ll understand how VoIP phone calls are set up – maybe worth attending the course all by itself!
7. SIP TRUNKING AND CARRIER CONNECTIONS
This chapter is all about connecting an in-building business VoIP phone system to the world. First, we’ll understand how connections used to be implemented with PBX trunks and ISDN PRI service. Then we’ll see how a gateway connects a modern VoIP system onto PBX trunks, and most importantly, how SIP Trunking replaces PBX trunks with a lower-cost and more flexible solution. Many big organizations have an existing data network, implemented as a VPN by a carrier. We’ll look at the advantages and disadvantages of using the “data” VPN, or the Internet, compared to SIP Trunking, and finish off with a practical checklist of features and technologies to require when choosing a carrier.
To cement your understanding of VoIP phone systems and carrier services, and even gain valuable insight into your own situation, you’ll work in a group to come up with the best solution for a company with 5,000 people in five states to migrate from PBX trunks to VoIP. The winners will be the ones who save the most money. Bonus points for saving money and providing useful new features!8. TESTING AND TROUBLESHOOTING VOIP
12. TCP, UDP AND PORTS
You will learn that IP does not come with any guarantees. There is no guarantee a packet will be delivered. Nada. To be sure a packet gets delivered, we use TCP or UDP. Plus, we’ll demystify a second piece of information that sneaks in with TCP and UDP: ID of the computer program you want to talk to. This ID is called the port number.
PART 4: PROJECT MANAGEMENT
14. VOIP MIGRATION PROJECT STEPS, TIPS AND TRICKS
The final module is a template for managing a VoIP project, with detailed checklists in the course book. Going through the template, you’ll learn how to do it the “right” way, from analyzing requirements to running trials, evaluating and selecting a vendor, rollout, acceptance testing and more. This project management guide is packed with practical tips and checklists to put to immediate use. If you are about to embark on a VoIP deployment, this might well be worth the price of the course all on its own!
Our goal is to bust the buzzwords, demystify jargon, understand technologies and mainstream solutions and - most importantly - the ideas underlying all of this, and how it all works together... knowledge you can't get on the job, talking to vendors or reading trade magazines.
You'll gain a long-lasting, solid base of unbiased career-enhancing knowledge you can build on, an investment
sure to be repaid many times over, increasing your confidence and productivity and eliminating jargon- and
Plus, you will receive a high-quality 300-page workbook – a valuable reference packed with detailed notes, diagrams and practical explanations, with experience, tips and templates you can put to immediate use, as well as a certificate attesting to your IP telecom knowledge skills.
If you've read this far, you know by now that this is the training you've been looking for to fill the gaps and get on top of VoIP and IP Telecom. Coverage of all major topics, high-quality course materials, TCO CVA certification and certificate suitable for framing, bonus poster and value pricing... don't miss this opportunity. Invest in yourself and your career and register for this course now.
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