Seminar Title

Technical Seminars on Data Communication Technologies

Data communications encompasses many different technologies that provide solutions that are optimized for speed, distance, or cost. Click on available topics to learn more.


General Information

Communications Layers

In order for two devices to communicate they need connectors, specific cable types, framing and other agreed-upon parameters. The OSI 7-layer model is the conventional way of understanding where the various protocols reside in this "communications stack".

Introduction to Data Communications

Some of the basics of datacom including the differences between LANs, MANs and WANs and why these distinctions exists. This seminar also explains the phone networks T1, T3, and OC-3 links.

Making Useful Networks

It takes more than wires to make useful networks. What is the difference between a name, address, and route? When do you use bridges, switches, and routers? Network Management allows you to manage and diagnose a network.

Overview - An overview of what it takes to make networks useful.

Bridges - A description of the four main types of bridges.

Routers - A description of the various types of routers and how they work.

IP addressing - A description of the four types of IP addresses, public/private
   addresses, and static/dynamic addresses.

Network Management - How these systems monitor complex networks.

Layer 1-2 Technologies

ATM (Asynchronous Transfer Mode)

ATM is technology that uses small cell sizes to transport data through networks. It provides good Quality of Service (QoS) and is often used on DSL modems and through the Telecom Carriers.

Overview - An overview of ATM, the types of connections, and a description of the various cell formats.

Connection Management - A description of the various forms of QoS, the messages that are required to establish a session, and the concept of Virtual Circuits (VCs).

ATM Adaptation Layer (AAL) - A description of the three types of ATM Adaptation Layer mechanisms (AAL-1, AAL-3/4, and AAL-5).

Cable Modem

The Cable Modem standard for the US is DOCSIS (Data Over Cable System Interface Specification). This series looks provides an overview of the workings of a cable TV system, the messages that control the system and the modulation technology.

Overview - An overview of the components of a cable TV system.

The DOCSIS Protocol - A description of the messages between the CMTS and the CM. This
   includes the mechanism to share the coax, ranging and registration.

The DOCSIS Physical Layer - The downstream/upstream modulation and data rates.

Quality of Service (DOCSIS 1.1) - The changes to DOCSIS 1.0 to implement Quality of
   Service (QoS).


Frame Relay (Available soon.)

A packet technology commonly used for businesses allowing simultaneous voice and data technologies.

Wireless Data Communications

Wireless communications can be used to cover large distances or short distances. The basic characteristics that define wireless standards are frequency, power, bandwidth, and modulation.

xDSL - Understanding the various forms of DSL Technology

There are many forms Digital Subscriber Loop (DSL) technologies including the best known,. ADSL (Asymmetric Digital Subscriber Loop). This seminar covers the capabilities of each of the xDSL technologies, the major applications, and basic technology of how they it works.

Layer 3-7 Technologies

IP Version 6

The next generation of the Internet Protocol (IP) has a number of improvements over the current IP version 4. Don't ask what happened to version 5.

Other Topics

Cable Modems vs. ADSL, Technology, Applications and Myths

Learn about these two types of broadband delivery systems. This seminar provides an overview of the technologies, where they shine and the the truth behind the myths being spread by these fierce competitors.

CableHome: The home networking standard

CableHome compliant equipment will be required by the cable operators to get enhanced content to home networking devices. This architecture uses existing home networking LAN technologies to deliver this content but enhanced routers, NATs, and bridges are required. If the customer desires, this architecture will allow the operator to configure your new devices, identify malfunctioning devices, and provide updates for your firewall.


Network Computing (Available soon.)

Network Computing puts the processor into the network and greatly reduces the costs of computing.

Voice over IP (VoIP)

Voice over IP allows telephone conversations to be delivered using data networks. This is an overview of the VoIP technology, architecture, and a discussion of the various aspects of connecting the data networks with the public phone network.

Overview - An overview of the components of the various aspects of VoIP.

Voice Coding Algorithms - A description of the various methods for digitizing speech.

VoIP Applications - The VoIP technology only becomes useful when compelling applications
   meet the needs of customers. The corporate, cable telephony, and video conferencing
   applications are examined.

VoIP Problems - Deployment of VoIP has been slower than expected because of problems
   with underlying networks, standardization issues, and network control devices.


Suggestions for more seminars?

Is there a topic you would like to learn about? Please let us know your ideas and if you provide your email address, we may be able to customize the seminar to better meet you interests.

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2016 NextGen Datacom, Inc.