Online Telecommunications Courses and TCO Certifications Catalog

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2201 The PSTN $49

Course 2201 The PSTN - Unlimited Plan

It all begins with Plain Ordinary Telephone Service and the Public Switched Telephone Network. In this course, you’ll build a solid understanding of the fundamentals of the telephone system: customer premise and Central Office, loops, trunks, remotes, circuit switching and how a telephone call is connected end-to-end.  We’ll cover LECs and IXCs, sound, analog and the voiceband, twisted pair, DTMF and SS7.

Course Lessons
1. Introduction
2. History of Telecommunications (USA and Canada)
3. The Public Switched Telephone Network (PSTN)
4. Analog Circuits and Sound
5. The Voiceband
6. Plain Ordinary Telephone Service (POTS)
7. Signaling: Pulse Dialing and Dual Tone Multiple Frequency (DTMF)
8. Signaling System 7 (SS7)

Based on Teracom’s famous Course 101, tuned and refined over the course of 20 years of instructor-led training, we’ll cut through the jargon to demystify telephony and the telephone system, explaining the jargon and buzzwords, the underlying ideas, and how it all works together… in plain English.

Featuring many photos of actual equipment both inside a Central Office and in the outside plant, this multimedia course is an excellent way to get up to speed on traditional telephony.

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2206 Wireless Telecommunications $49

Course 2206 Wireless Telecommunications - Unlimited Plan

Wireless Telecommunications is a comprehensive course on wireless, including radio fundamentals, cellular and mobile telecommunications plus WiFi and more.

Course Lessons
1. Introduction
2. Mobile Network Components, Jargon and Basic Operation
3. Cellular Principles and AMPS (1G)
4. 2G: Digital Radio - Voice Communications
5. Digital Cellular: Data Communications
6. Spectrum-Sharing Technologies: FDMA, TDMA, CDMA, OFDM
7. 3G Cellular: CDMA
8. 4G Mobile Cellular: LTE
9. 802.11 Wireless LANs - WiFi
10. Communication Satellites

The objective of this course is to develop a solid understanding of mobile communications networks and technologies. We'll cut through the jargon to demystify wireless, explaining the fundamentals of cellular and mobility, the buzzwords, the network, technologies and generations, the underlying ideas, and how it all works together... in plain English.

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2212 The OSI Layers and Protocol Stacks $49

Course 2212: OSI Layers and Protocol Stacks - Unlimited Plan

The ideas in this course allow us to relate different pieces of the puzzle together in all of the subsequent lessons and courses.

The OSI 7-Layer Reference Model is used to sort out the many functions that need to be performed, to be able to discuss separate issues separately. The functions are organized into groups called layers, which are stacked one on top of the other.

The course starts with the big picture, then one lesson for each layer, then protocol stacks.

Course Lessons
1. Introduction
2. Open Systems
3. Protocols and Standards
4. ISO OSI 7-Layer Reference Model
5. The Physical Layer
6. Data Link Layer
7. Network Layer
8. Transport Layer
9. Session Layer
10. Presentation Layer
11. Application Layer
12. Protocol Stacks
13. Protocol Headers
14. Standards Organizations

Based on Teracom’s famous Course 101, tuned and refined over the course of more than 25 years of instructor-led training. You'll learn what a layer is, what the layers are, what each one does and examples of where things like TCP fit into the model ...and how it all works together… in plain English.

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2211 Ethernet, LANs and VLANs $49

Course 2211: Ethernet, LANs and VLANs - Unlimited Plan

Ethernet is the standard method of implementing data links between two machines. What started out as connections between PCs in the office has now spread to Optical Ethernet, used almost universally in the telecom network core, and fiber to the premise.

Course Lessons
1. Introduction
2. Buses, MAC Addresses and Frames
3. Ethernet and 802.3
4. Gigabit and Optical Ethernet
5. LAN Cable Categories
6. Bridging
7. LAN Switches
8. VLANs

Taking this course, you'll gain a solid understanding of this essential technology:
• Ethernet and buses
• Broadcast domains
• MAC addresses
• MAC frames
• The IEEE 802 standards
• Ethernet from 10BASE-T to Gig-E
• LAN switches
• LAN cables
• TIA-568 cable categories
• How a LAN switch a.k.a. Layer 2 switch works
• VLANs

Based on Teracom’s famous Course 101, tuned and refined over the course of more than 25 years of instructor-led training and counting. We’ll cut through the jargon to demystify Ethernet, MAC addresses, LANs and VLANs, explaining the jargon and buzzwords, the underlying ideas, and how it all works together… in plain English.

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2213 IP Networks, Routers and Addresses $49

Course 2213: IP Networks, Routers and Addresses - Unlimited Plan

IP Networks, Routers and Addresses is a comprehensive course on IP networking fundamentals: IP packets, IP addressing and IP routers.

We'll see how routers implement the network with packet-switching, that is, relaying packets from one circuit to another, and how routers are a point of control for network security. We'll introduce the term Customer Edge (CE), and understand the basic structure and content of a routing table.

Then we'll cover the many aspects of IP addressing: IPv4 address classes, dotted decimal, static vs. dynamic addresses, DHCP, public vs. private addresses, Network Address Translation, and finish with an overview of IPv6.

Course Lessons
1. Introduction
2. Review: Channelized Time-Division Multiplexing (TDM)
3. Statistical Time-Division Multiplexing: Bandwidth-on-Demand
4. Network: Bandwidth on Demand + Routing
5. Routers
6. IPv4 Addresses
7. DHCP
8. Public and Private IPv4 Addresses
9. Network Address Translation
10. IPv6 Overview
11. IPv6 Address Allocations and Assignment

Based on Teracom’s famous Course 101, tuned and refined over the course of 20 years of instructor-led training, we’ll cut through the jargon to clearly explain IP and routers, packets and addresses, the underlying ideas, and how it all works together… in plain English.

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2214 MPLS and Carrier Networks $49

Course 2214 MPLS and Carrier Networks - Unlimited Plan

MPLS and Carrier Networks is a comprehensive training course designed to build a solid understanding of carrier packet networks and services, the terminology, technologies, configuration, operation and most importantly, the underlying ideas… in plain English.

We’ll cut through the buzzwords and marketing to demystify carrier packet networks and services, explaining Service Level Agreements, traffic profiles, virtual circuits, QoS, Class of Service, Differentiated Services, integration, convergence and aggregation, MPLS and other network technologies, and how they relate to TCP/IP without bogging down on details. 

Course Lessons
1. Introduction
2. Carrier Packet Network Basics
3. Service Level Agreements
4. Virtual Circuits
5. X.25*
6. Frame Relay*
7. TCP/IP over Frame Relay*
8. QoS Requirement for Voice over IP
9. ATM*
10. MPLS
11. TCP/IP over MPLS
12. Differentiated Classes of Service using MPLS
13. Integration and Convergence using MPLS
14. Managing Aggregates of Traffic with MPLS Label Stacking
15. MPLS Services vs. Internet Service

* Lessons on legacy technologies are optional, included for reference for anyone who needs to know about them. They are not on the final exam. Feel free to skip these lessons.

Based on Teracom’s famous Course 101, tuned and refined over the course of over 25 years of instructor-led training, you will gain career- and productivity-enhancing knowledge of the structure, components and operation of carrier packet networks and services, how they are implemented, packaged and marketed by carriers and how they are used by government, business… and other carriers.

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2221 Fundamentals of Voice over IP $49

Course 2221 Fundamentals of Voice over IP

Fundamentals of Voice over IP is a complete introduction to everything Voice over IP. You'll learn the fundamental ideas and principles of a VoIP telephone system, VoIP, SIP & all the other jargon - what it actually means and how it all works together.

At each step, we'll also cover supporting and related technologies like Ethernet MAC frames and codecs and video over IP.

This course can be taken by anyone who needs to get up to speed on all things VoIP. You will gain career-enhancing knowledge of the components and operation of Voice over IP systems, and learn what all of the jargon and buzzwords mean.

Course Lessons
1. Introduction
2. VoIP Phones and Terminals
3. Voice in IP Packets
4. SIP and Softswitches - SIP Servers / Call Managers
5. Media Servers
6. Gateways
7. LANs and WANs
8. Key VoIP Standards
9. Where All of This is Headed: IP Dial Tone

Based on Teracom’s famous Course 130, tuned and refined over the course of over 20 years of instructor-led training, you will gain career- and productivity-enhancing knowledge of the structure, components and operation of voice over IP- what it is, how it works, what the main technologies are and more.

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2222 VoIP Architectures and Implementation Choices $49

Course 2222 VoIP Architectures and Implementation Choices

VoIP Architectures and Implementation Choices is a comprehensive overview of the many flavors of VoIP, comparing and contrasting the various implementation and architecture choices.

Progressing from talking between computers over the Internet through Internet telephony, Managed IP Telephony, PBX replacement with distributed call manager systems and IP Centrex / Hosted PBX, you'll gain the knowledge to confidently differentiate VoIP architectures and discuss pros and cons of options.

Course Lessons
1 Intro + Internet Telephony: Computer-Computer VoIP over the Internet
2 Internet Telephony Example: Skype
3 VSPs: Internet to Phone e.g. Gmail Client
4 VSP Phone to Phone over Internet e.g. Vonage
5 VoIP Becomes The New POTS
6 VoIP at Carriers
7 VoIP-Enabled PBX and Migration Options
8 Premise Softswitch: PBX Replacement
9 Cloud Services and Hosted PBX: Softswitch as a Service (SaaS)
10 IP Centrex
11 Asterisk and Open-Source Softswitch Software
12 IP Phone Features and Uses

Based on Teracom’s famous Course 130, tuned and refined over the course of over 20 years of instructor-led training, you will gain career- and productivity-enhancing knowledge of all of the different things someone could mean when they say "Voice over IP", and the pros and cons of each.

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2223 Softswitches, SIP and Call Setup $49

Course 2223 Softswitches, SIP and Call Setup

Softswitches, SIP and Call Setup is all about how VoIP phone calls are set up using messages and procedures complying with the standard Session Initiation Protocol.

In this course, you'll understand what SIP is, how it works, demystify jargon like proxy server 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.

Course Lessons
1 Intro + What SIP Is and What It Can Do
2 SIP's Relationship to Other Protocols
3 SIP URIs: Telephone Numbers
4 Register: Update Your Location
5 INVITE: Dialing
6 Location Service: Finding the Far End
7 The SIP Trapezoid
8 SIP Messages and the Session Description Protocol
9 How SIP Relates to Softswitches and Call Managers

Based on Teracom’s famous Course 130, tuned and refined over the course of over 20 years of instructor-led training, you will gain career- and productivity-enhancing knowledge of how SIP is used to set up a VoIP phone call end-to-end, and how SIP fits in with call managers and softswitches.

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2224 Voice Packetization, Codecs and Voice Quality $49

Course 2224 Voice Packetization, Codecs and Voice Quality

Voice Packetization, Codecs and Voice Quality is the "nuts and bolts" of Voice over IP: how the voice is digitized and coded, time stamps applied with the RTP protocol, and how the result is carried in UDP, IP packets and MAC frames.

You'll learn about codecs and compression, and understand factors like delay, jitter and packet loss, what causes them, and how they affect sound quality. Sample sound clips with lost packets and uncorrected timing variations are included so you can hear the effects.

Course Lessons
1 Voice Packetization
2 Measuring Voice Quality
3 Factors Affecting Voice Quality
4 Codecs: Voice Coding and Compression
5 Delay
6 Jitter
7 RTP
8 Protocol Stack: RTP, UDP, IP, MAC
9 Packet Loss
10 Tips for Maximizing Voice Quality

Based on Teracom’s famous Course 130, tuned and refined over the course of over 20 years of instructor-led training, you will gain career- and productivity-enhancing knowledge of how packetized voice is actually implemented and the factors affecting sound quality.

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2225 SIP Trunking & Carrier Connections $49

Course 2225 SIP Trunking & Carrier Connections

SIP Trunking & Carrier Connections is all about connecting to carriers to communicate VoIP phone calls, both carrier-to-carrier connections and business-to-carrier SIP trunking.

You'll learn how currently the only way for a competitive carrier to terminate a phone call on a Local Exchange Carrier to connect a VoIP call to someone with POTS is at the DS0 level using a gateway. We'll understand why this will be a native VoIP connection in the future, and the role of Session Border Controllers. Then we'll understand how a business can connect to the telephone system using a gateway and PBX trunks, and the advantages of the newer SIP Trunking services for business to PSTN connection.

Course Lessons
1 Introduction + Carrier-Carrier Connection via DS0
2 Carrier-Carrier VoIP Interconnection
3 Session Border Controllers
4 Business PSTN Connection using PBX Trunks and Gateway
5 Softswitch Controlling the Gateway
6 SIP Trunking: Native VoIP Connection

Based on Teracom’s famous Course 130, tuned and refined over the course of over 20 years of instructor-led training, you will gain career- and productivity-enhancing knowledge of how connections are made to carriers, both for business-PSTN connections and carrier-carrier connections.

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2226 IP Network Quality: CoS, QoS, MPLS and SLAs $49

Course 2226 IP Network Quality: CoS, QoS, MPLS and SLAs

IP Network Quality CoS, QoS, MPLS and Diff-Serv focuses on the network service provided by carriers to move packets containing voice, and how network traffic is identified, managed and prioritized, resulting in Class of Service offerings to meet Service Level Agreements.

You will learn how carriers use virtual circuits to manage flows of IP packets, and how MPLS is used to do this. You will understand the idea of Differentiated Services: different transmission characteristics for different kinds of traffic, and how these are implemented as Classes of Service (CoS). We'll cover Service Level Agreements and how "throttling" some users is sometimes necessary to ensure all users are getting the CoS they are paying for. We'll cover the Quality of Service (QoS) mechanisms MPLS and 802.1P and how Classes of Service are implemented by routers.

Course Lessons
1 Course Introduction + Virtual Circuit Technologies
2 MPLS
3 Differentiated Services (Diff-Serv)
4 Service Level Agreements, Meters, Markers, Shapers and Droppers
5 Interworking Diff-Serv and MPLS
6 Using 802.1P for QoS
7 Implementing CoS: Queuing Techniques

Based on Teracom’s famous Course 130, tuned and refined over the course of over 20 years of instructor-led training, you will gain career- and productivity-enhancing knowledge of network quality, how it is specified and implemented.

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2231 Wireless Fundamentals $49

Course 2231 Wireless Fundamentals - Unlimited Plan

Wireless Fundamentals is the first course in the CWA Certification Package.

We begin with the fundamentals: what radio is, how it's organized and how and it's used to communicate information. Since most systems are digital, we spend time understanding how modems represent 1s and 0s on radio, and explain jargon like QAM and QPSK. We finish with propagation, penetration then fading.

Course Lessons
1. Radio 
2. Wireless Spectrum and Radio Bands
3. Analog Radio 
4. Digital Radio: How Modems Work
5. Propagation, Penetration and Fading

Based on Teracom's instructor-led training, tuned and refined over the course of over 20 years, you will gain career- and productivity-enhancing fundamentals in radio - what it is, how it works, what the main technologies are and more.

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2232 Mobile Communications $49

Course 2232 Mobile Communications - Unlimited Plan

Mobile Communications is the second course in the CWA Certification Package.

This is a comprehensive course on mobile communications from A to Z: cellular principles, digital voice, data over cellular, mobile Internet access, and explaining the technologies: FDMA, TDMA, CDMA and OFDM, and the generations: 2G GSM, 3G 1X, UMTS and HSPA and 4G LTE.

This is where the money is!

Course Lessons
1. Mobile Network Components and Operation
2. Cellular
3. 1G: Analog Frequency-Division Multiple Access
4. Second Generation: Digital Cellular
5. Digital Cellular: Voice Communications
6. Internet Access via Cellular: "Data" Communications
7. 2G TDMA (IS-136): Time-Division Multiple Access
8. 2G TDMA (GSM): Time-Division Multiple Access
9. 2G CDMA: Code-Division Multiple Access
10. Spread Spectrum
11. CDMA Operation and Patents
12. 3G: CDMA 1X and UMTS
13. 4G: LTE
14. 4G: OFDM
15. Dynamic Assignment of Subcarriers
16. Spectrum-Sharing Roundup: FDMA, TDMA, CDMA, OFDM

Based on Teracom's instructor-led training, tuned and refined over the course of over 20 years, you will gain career- and productivity-enhancing fundamentals in radio - what it is, how it works, what the main technologies are and more.

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2233 Fixed Wireless $49

Course 2233 Fixed Wireless - Unlimited Plan

Fixed Wireless is the third and final course in the CWA Certification Package.

This course covers WiFi and the 802.11 Wireless LAN standards, the different version, WiFi security and why you want WPA-2 Personal, Bluetooth, WiMAX, point-to-point microwave and satellites.

Course Lessons
1. Infrared
2. Bluetooth
3. WiFi: Wireless LANs
4. WiFi Security and WPA2
5. 802.16 WiMAX
6. Point-to-Point Microwave
7. Satellite

Based on Teracom's instructor-led training, tuned and refined over the course of over 20 years, you will gain career- and productivity-enhancing fundamentals in radio - what it is, how it works, what the main technologies are and more.