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Welcome to CellStream, Inc. - Telecom Consulting and Training!

Welcome to our home on the Internet, where we can not only share information, but also interact with each other. If you are a visitor to the site, there are a number of things to view: our FAQ'sNetworking and Computing Tips, our CellStream Blog, and other fun reading can all be found in the drop down menus above.  The Training menu provides access to our courses, our course calendar, and learning services.  The Consulting Menu provides information on our consulting services and a place to meet our consulting and teaching team.  Registered CellStream folks and our clients will log in using their private credentials to access projects, calendars and discussions.

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CellStream Logo trim plus TM 150x50  

CellStream, Inc. - Telecom Consulting and Training!            

1-Day, Instructor Led, Web Based Delivery or Self Paced, Online
Minimum: 10 Students
Web Based Delivery: Max class size is 30
On Site Delivery: Max class size is 20

This course is also available as an 8 hour online class which must be completed in 30 days of beginning the course.

Click here to go to the Online Class.



What Students are Saying about this class:

  • “Great class. Very information packed. In-depth for a 101 class. A++” 
  • “Currently employed for 3 months when I took this course. I think the 20 yr guys could use this too” 
  • “I liked the labs associated with this course because it did a great job reviewing items learned” and “The first lab is a little rough, did not expect it. Started paying much more attention.”
  • “The instructor goes over examples and explaining everything in detail  – You did a great job going over everything in the Telecom 101 course! Thank you!”
  • “I liked the PDF of the slides that you can take notes on.”
  • “I liked that you could see the answers to the quizzes afterward so that you can learn from it.”
  • “Explains everything really well – great job with the entire class”
  • “Very informative, gives greater understanding - just as course is properly named ‘101’”

Course Description:

Understanding the basics of the rapidly evolving Telecommunications Networks is important to Service Provider new hires, technical and customer service employees. This one day Telecom 101 course explains and demystifies the terms used, and the technologies, functions and components that make up the complex world of the voice and data telecommunications networks. So much has happened historically, the buzz words and three letter acronyms that the experienced take for granted can be overwhelming.

From Plain Old Telephone Service, to the Internet, to the regulatory environment, this course provides a complete survey and reference for the terms, the network equipment functions, and the components that make up the complex world of voice and data telecommunications.

Target Audience

The target audience is the new Telephone or broadband company employee, technical and customer service employees, or existing employees and managers that need a background in the combined telephone and broadband Internet services that the company offers. The course will appeal to the technical and non-technical audience alike with just the right blend of both worlds.

Course Outline:

Section 1:  Plain Old Telephone Service - aka: POTS

    • Part 1
      • Define the term Telephony
      • Discuss how sound is handled
      • Define the Traditional Telephone Network parts
      • Define the parts and operation of a Telephone
      • Define the Local Loop
      • Examine local distribution to the Demarc
    • Part 2
      • Define the Central Office (CO)
      • Define and discuss the CO Voice Switch and its functions
      • Telephone Numbering – how the switch determines who you are calling
      • Hierarchy of Switches in the Telephone System
      • Hierarchy of Providers in the Telephone System
    • Part 3 
      • Define the Digital Telephone System
      • Examine how voice is digitized
      • Examine how digital calls can be multiplexed
      • Define Trunks and contrast them to Lines
      • Define TDM and SONET schemas
    • Part 4
      • Clarify Private Voice Switching
      • Define Centrex as an alternative to the PBX
      • Define Optical delivery of services
      • Define DSL delivery of services
      • Explore the Customer Service Record
      • Define five 9’s performance
    • Part 5 
      • Define and examine the Cellular Telephone System
      • Examine the call model in Cellular systems
      • Examine how Cellular Systems connect to the PSTN
      • Examine cellular tower systems
      • Define WiFi based Internet service providers

Section 2: The Internetwork - aka the Internet

    • Part 1
      • Define and examine what the Internet is
      • Review a [very] brief history of the Internet
      • Examine some graphic renderings of the Internet
      • Define the Internet of Things
    • Part 2
      • Discuss how the evolution of computing and networking are intertwined
      • Define the layered framework of data communication 
      • Define the OSI Reference Model 
      • Define the encapsulation of information as prescribed by the layered framework
    • Part 3
      • Illustrate and define Local Area Networks
        • Define wired and wireless Ethernet
        • Define Hubs and Switches
      • Illustrate and Define Wide Area Networks
        • Define the Internet Protocol version 4 and version 6
        • Define what Routers do
      • Understand how local and wide area networks work together as one big Data Network
    • Part 4
      • Review how voice is digitized into 1’s and 0’s
      • Discuss how digitized voice and data converge
      • Discuss the many different Voice CODECs
      • Introduce how voice can then be carried over the Internet
      • Provide a reference for voice in the layered model
      • Discuss the business advantage of Voice over IP
    • Part 5
      • Dissect the network functions necessary to provide Voice Services
      • Align these functions to the POTS Switch and contrast them to VoIP
      • Explain the key VoIP devices, focusing on the Session Border Controller
      • Contrast two VoIP models
        • Voice on the Internet (VON)
        • Managed Voice over IP
    • Part 6
      • Discuss the options for implementing VoIP on a traditional POTS network
      • Implement the VoIP components we have learned into the possible solutions
      • Examine some of the new potential VoIP features
      • Examine the SIP protocol
      • Summarize this Internet Section of the course

Section 3 - The Regulatory Ecosystem

    • The FCC and Policies
    • USF Funding
    • Inter Carrier Compensation
    • The National Broadband Plan
    • The Connect America Fund
    • Interpreting the Regulatory Ecosystem Issues

Course Availability:

Contact us for schedule dates and times.

View the course calendar and browse for our schedule.


Course Description, Content, Outline, and Instructional Design are Copyright ©CellStream, Inc.


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