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You'll gain key concept-level knowledge that you cannot get on the job, from vendors or magazines.
|Content Part 1: Fundamentals of Telecommunications|
| 1. Introduction to Telecommunications
We begin with a big-picture, comprehensive introduction to broadband telecom: the ideas of broadband and convergence, today's telecom network, the various parts of the network, and three key technologies: IP, Ethernet and MPLS, explaining what they are and what they do. We cover end-to-end how a circuit is implemented, and identify typical residential, business and wholesale services.
D. Today's Telecom Network
E. Network Core
F. Ethernet, IP and MPLS
G. Network Access
H. Telecommunication Service Implementation
I. Carrier Interconnect
J. Residential, Business and Wholesale Services
You'll receive a firm foundation in the fundamental concepts of telecom: elements of a circuit; clients, servers, peers and terminals; how pulses are used to represented bits on fiber; and how modems are used to represented them in wireless, cable TV and DSL. Next you'll learn how shared capacity is used to carry traffic from many users on common facilities through Frequency Division Multiplexing (FDM), Time Division Multiplexing (TDM), overbooking and Bandwidth on Demand.
B. Terminals, Clients, Servers and Peers
C. Pulses: Representing Bits on Digital Circuits
D. Modems: Representing Bits in Frequency Channels
E. Serial and Parallel
F. Sharing: FDM on CATV, Radio and Fiber
G. Sharing: Channelized TDM
H. Efficient Sharing: Bandwidth on Demand and Statistical TDM
Next, you'll receive a firm foundation in network fundamentals and jargon. Today's converged telecom network developed from what we use to call "data communications", that is packets in frames. Staying out of the details, we cover basic circuit configurations, learn how routers relay packets between circuits, and how packets are transmitted between devices in frames. We fill gaps and bring you up to speed on MAC frames, IP packets and MPLS labels, including the purpose of each and how they work together.
B. Balanced: LANs and Ethernet
C. Frames and MAC Addresses
E. Packets and IP Addresses
F. IP Packets in MAC Frames
G. IP Packets
H. MPLS Labels
The Internet began in order to send text email messages and is now converged broadband communications worldwide. Here, we explain what exactly an Internet Service Provider (ISP) does, and how they can get packets delivered worldwide. We review browsers and apps, web clients and web servers, and then explain the huge business of cloud computing, web services and data centers.
B. The Inter-Net Protocol
C. Internet Service Providers (ISPs)
D. Domain Name System (DNS)
E. Web Clients: Browsers and Apps
F. Web Servers: HTTP, HTTPS, HTML
G. Web Services
H. Cloud Computing and AWS
I. Data Centers
J. Net Neutrality
A complete foundation in telecom must include understanding where the money is, which is in services with recurring billing. We organize services into the categories of Residential, Business and Wholesale, and identify the current choices and offerings in each category. We include Broadband Internet, Internet VoIP with a PSTN phone number, and video streaming for residences; in the business category VPNs, PRI, Centrex, and SIP trunking; and wholesale services wavelengths, dark fiber, Carrier Ethernet and IP transit.
2. POTS & PSTN Phone Calls
3. VoIP Internet Telephone Service
4. "Basic Cable" and Video-on-Demand
2. "MPLS Services" and MPLS VPNs
3. Internet VPNs
5. PRI & PBX Trunking, SIP Trunking
2. Software-Defined Network (SDN)
3. Internet Transit
4. Content Delivery Networks (CDN)
The converged network carries all types of media: voice, text, video, and images in packets. Digitizing the media is the essential first step, which means representing media using 1s and 0s, so it can be carried in packets. You'll learn how voice is digitized and then reconstructed applying the G.711 64 kb/s standard. You'll see that the same principles are applied to images in formats like jpg, and to mp4 videos. We review binary and hexadecimal, and then finish with unicode for emojis and text.
B. Continuous Signals, Discrete Signals
C. Voice Digitization (Analog → Digital Conversion)
D. Voice Reconstruction (Digital → Analog Conversion)
E. Digital Voice: 64kb/s G.711 Standard
F. Digital Video: H.264 / MP4, HD, 4K
G. Digital Images: JPG, GIF, PNG
H. Digital Images in Emails: MIME
I. Digital Quantities: Binary and Hex
J. Digital Text: ASCII and Unicode
|Content Part 2: Telecom Technologies|
| 7. Wireless
In this segment, we focus on wireless transmission. We identify basic principles of operation and the components of a mobile network. We explain the requirements for mobility, coverage and capacity, and the reason cellular radio systems are used. You’ll understand how mobile to land-line (PSTN) phone calls are connected, and about roaming, mobile Internet and virtual operators. We cover mobile 4G LTE and 5G, plus fixed wireless broadband home internet. You'll learn about WiFi and the 802.11ax standard, and finally satellite communications.
C. Mobile Network Components and Operation
4. Mobile Switches & MTSOs
E. PSTN Phone Calls with the Phone App ("Voice Minutes")
F. Mobile Internet ("Data Plan")
G. Broadband Delivery: Cellular + WiFi
H. Mobile Operators, MVNOs and Roaming
I. Spectrum-Sharing Technologies: FDMA, TDMA, CDMA, OFDM
J. 4G LTE
K. 5G New Radio (NR)
L. 3.5 GHz Fixed Wireless Broadband Internet
M. WiFi: 802.11 Standards & Wireless LANs
N. LEO and GEO Satellites
The network core is created by connecting routers to other routers point-to-point with fiber. Telephone companies used to run copper wires to access every home in a suburb. They are now investing to run fiber to access every home. In this segment, you'll learn the basics of fiber, wavelengths, WDM and the makeup of fiber cables. You'll learn how Optical Ethernet implements the fiber connections, plus how Optical Ethernet is used in fiber to the premise via PONs (Passive Optical Networks) in the core and in metro areas.
B. Fiber and Cable Construction
C. Distance-Limiting Factor: Dispersion
D. Optical Wavelengths and Bands
E. Wave-Division Multiplexing: CWDM and DWDM
F. Optical Ethernet
G. Network Core: Regional Rings and POPs
H. Metropolitan Area Network
I. Fiber to the Premise
2. Active Optical Network
3. MAN Stations and Stubs
The physical access circuit in suburbs and cities, before wireless and fiber, was two copper wires for telephone and cable TV service. These wires are used today to deliver broadband. In this segment, you'll learn how the twisted pairs, put in place originally for analog POTS telephone service, are used to deliver DSL broadband service; how broadband on coaxial cable is moved by cable modems; and how both are delivered to the neighborhood on fiber then on copper to the premise. To finish, we explain digital on copper wires: T1s and LAN cables.
2. Analog Circuits
3. The Voiceband
4. Plain Ordinary Telephone Service (POTS)
6. DSL and VDSL2
7. Fiber to the Node plus DSL to the Premise
2. Cable Modems
D. LAN Cables and Categories
|Content Part 3: Equipment, Carriers and Interconnect|
| 10. Telecom Equipment
In this segment, we review the various types of telecom equipment, starting with the essentials for the broadband telecom network: IP/MPLS routers and Ethernet switches, comparing costs and capabilities. Next, we review the various types of broadband customer premise equipment. To explain call managers, soft switches and SIP servers, we compare them with legacy PBXs and CO switches to see the fundamental differences. We finish with gateways and how gateways convert packets to channels.
B. Broadband Customer Premise Equipment
C. CO Switches, PBXs and Remotes
D. Call Managers, Soft Switches and SIP Servers
For customers of different carriers to commmunicate, the carriers' networks must be physically connected. In this segment, we explain how the Internet is implemented, with transit agreements and peering at Internet Exchange buildings. We also explain about POPs in toll centers: where and how local exchange service providers: mobile providers, ILECs and CATV, connect together and connect to other carriers to enable phone calls using a PSTN phone number; and how calls are set up using SS7. We end by explaining where a CLEC fits in the story by collocating equipment in wire centers.
B. Toll Centers: Interconnecting PSTN Telephone Calls
C. IXCs and LECs: Implementing Long-Distance Competition
D. Switched Access and POPs
E. CATV and Wireless Local Exchange Carriers
G. COs and Wire Centers
H. Local Competition: CLEC – Collocation plus ILEC Dark Fiber
|Content Part 4: Networking|
| 12. The OSI Layers and Protocol Stacks
To interoperate systems, so many functions must be performed that a structure is needed to organize the functions in order to treat separate issues separately. We begin part four with the ISO 7-Layer Open Systems Interconnection Reference Model, the most commonly-used structure. We explain what a layer is, each layer's purpose, give examples of protocols used to implement layers like TCP and IP, and provide a practical view of how protocol stacks work for applications like VoIP and web surfing.
B. ISO OSI Reference Model
C. OSI 7-Layer Model
D. Physical Layer: DSL, 802.3, DOCSIS
E. Data Link Layer: 802 MAC
F. Network Layer: IP and MPLS
G. Transport Layer: TCP and UDP
H. Session Layer: POP, SIP, HTTP
I. Presentation Layer: ASCII, Encryption, Codecs
J. Application Layer: HTML, SMTP, English …
K. Protocol Stack in Operation: Eg. Babushka Dolls
L. Standards Organizations
Ethernet is used for linking devices point-to-point in all network parts, thus implementing OSI model Layers 1 and 2 together. In this segment, we review the basic principles of LANs and Ethernet formalized by stardards in the 802 series, plus the concepts of broadcast domains, MAC addresses and MAC frames. You'll learn how Layer 2 switches, also called LAN switches, connect devices, and use VLANs to separate devices for basic network security.
B. Ethernet and 802 standards
C. Layer 2 / Ethernet Switches
This segment is focused on IP which is used to implement Layer 3. We start with IP addressing: address classes, DHCP, subnets, static and dynamic addresses, private and public addresses and Network Address Translation. We use a simple IP network to show how routers relay packets from link to link to implement the network, and also serve as a point of control denying communications based on port number and/or IP address. We finish this segment with IPv6 addressing.
B. Subnets: Prefix and Subnet Mask
C. DHCP, Static and Dynamic Addresses
D. Assigning Subnets to Broadcast Domains
E. IP Network: Routers and Routing Tables
F. Routers and Customer Edge (CE)
G. Public and Private IPv4 Addresses
H. Network Address Translation (NAT)
J. IPv6 Address Types and Address Allocation
In the future everything, including television and phone calls, will be carried in IP packets. However, IP in itself does not provide any way to manage or prioritize traffic to guarantee picture quality or call quality. MPLS is used in a carrier's network core to implement those functions. In this segment, we cover the basics of carrier networks and the need for Service Level Agreements. You’ll gain practical knowledge on how MPLS works and how carriers use it to implement different Classes of Service, VPNs, traffic aggregation and service integration.
B. Class of Service (CoS) and Service Level Agreements
C. Provider Equipment at the Customer Premise
D. Virtual Circuit Technologies
F. MPLS VPNs for Business Customers
G. MPLS for Service Integration
H. MPLS and Diff-Serv Supporting Classes of Service
I. MPLS for Traffic Aggregation
The final segment brings together all of the concepts with a top-down review. You’ll gain valuable insights into telecom methodology and project management. We review broadband, telecom, datacom and networking services, technologies and solutions. We conclude by peeking at the future of telecommunications, when the Internet and telephone network become the same thing.
B. Requirements Analysis
C. High-Level Design
D. Review: Circuits and Services
E. Technology Roundup
F. Private Network
G. Carrier IP Services
H. The Future
|Content Part 1: Voice over IP and SIP|
1. VoIP Components, Systems, Standards, Jargon and Buzzwords
We start with VoIP buzzwords and jargon, the basics of voice in IP packet communications, what the system components are, what each component does: soft switches, terminals, media servers and gateways, plus the main protocols and standards used in VoIP systems. We finish with "where this is all headed" and what will basic “telephone” service be in 20 years.
5. Voice Quality
Call quality is most important, particularly to the callers! In this segment, we explain what factors affect VoIP quality and how to correct any problems. You'll learn the factors that affect voice quality including codec, delay, jitter and lost packets, and how it is measured. We demystify how packets get “lost” or delayed, and you'll hear the resulting effects. We finish with a checklist of practical tips and recommendations to ensure success.
6. VoIP Carrier Services
We round out the VoIP part of the course with carrier connections. We begin with Class of Service performance guarantees in SLAs, Service Level Agreements, and end with selecting a VoIP carrier. We cover SIP trunking as a replacement for PBX trunks in business phone systems; how incumbent, cellular, cable and internet carriers connect for PSTN-VoIP phone calls; and connecting with Megaco and gateways.
|Content Part 2: Security|
The more ways things are connected, the more ways for criminals to make money. This extensive segment will give you a complete overview of security. We start with an overview and identify the valuable targets. We cover phishing and extortion, and what happens with data from "breaches". Then, we explore the risks, the measures taken, and the best practices in firewalls, network security and ports; private and public key encryption, digital certificates, digital signatures, VPNs; trojans, viruses and exploits and finally VoIP security.
|Content Part 3: 5G and IoT|
8. 5G: New Radio and New Spectrum
In this segment, you'll learn the latest developments for deployment of 5G, the next generation of wireless. We explain the immediate impact of 5G which is a 40% increase in the number of bits per second per Hz, allowing for massive MIMO and then, longer-term, ultra-broadband millimeter wave applications. We explain the 5G design goals and the New Radio spectrum allocations. We end by covering the chip which is enabling the first 5G smartphones.
The Internet of Things: we begin by explaining exactly what that means, what Things, what and how they might communicate, the need for a computer in every Thing and how to power it.
10. Application Examples: 5G, IoT and Convergence
We end BOOT CAMP and Course 130 with examples of 5G applications such as platooning on interstate highways, traffic flow optimization in Smart Cities, and ultra-low-power tracking, examples of IoT, and examples of VoIP and convergence.
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.
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.
Teracom Training Institute
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