Telecommunications Training Blog
Tutorials and articles from Teracom Training Institute. Bringing you the best in telecom training and certification since 1992.
TCO CVA Certified VoIP Analyst Study Guide
New up-to-date version released July 2022.
Available from Amazon in hard cover, soft cover or ebook.
Printed in color!
Certification study guide and companion reference textbook for the TCO Certified VoIP Analyst (CVA) courses and exams. The CVA Study Guide corresponds directly to the CVA online courses and exams. For each lesson, detailed text notes are provided along with the main graphic.
Many people find they learn better with a companion book.
Boot Camp In-Person
Washington, DC Oct 24-28, 2022
The August Boot Camp In-Person class was full.
Reserve your spot for October now and don’t miss out on the opportunity to be face-to-face with your instructor.
The best telecommunications training you can get: ask questions and interact.
From the fundamentals to latest technologies, Boot Camp is specifically designed for non-engineers.
“Awesome course, really. Just very, very good.” – Tim Wilson, Ciena
CVA – Certified VOIP Analyst
Course 2222 VoIP Architectures and Implementations
Lesson 3 – VSPs: Internet to Phone e.g. Gmail Client
Enjoy this free preview from CVA – Certified VOIP Analyst
Course 2222 VoIP Architectures and Implementations
VoIP over the Internet • VoIP at Carriers • VoIP-Enabled PBX • PBX Replacement • Softswitches • Hosted PBX • Cloud Services • IP Centrex • Asterisk & Open-Source • SO/HO VoIP Phone Features
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 enhancement, PBX replacement with call manager / softswitch systems, IP Centrex, Hosted PBX and Cloud Services, you’ll gain the knowledge to confidently differentiate VoIP architectures and discuss pros and cons of options.
Click here to watch the video:
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.
This is just a small sample of the vast online telecommunication training and certification available through Teracom Training.
CVA Unlimited Plan $459
Six courses covering everything VoIP and SIP.
Check out the CTNS+CVA package deal $659.
The foundations of telecommunications plus everything VoIP and SIP.
Here’s Lesson 1 from our new Course 2221
Fundamentals of Voice over IP. Cheers!
The term soft switch is not defined in a standard… meaning that marketing departments at different equipment and software manufacturers use the same term to describe different things.
A switch, in its simplest form, is a device that causes communications to happen from one point to one other particular point, often when there are multiple “other” points to choose from.
A traditional Central Office (CO) telephone switch might be called a “hard” switch, since it has physical line cards that terminate loops. The switching software running on the computer which is the CO switch directs traffic between a line card and a trunk or between two line cards during a phone call.
The term soft switch is used to mean a computer running switching software that does not have telephone line cards – the communications are instead directed to the correct destination by routers routing packets, a software function.
E-mail was one of the first “killer apps” on the Internet, and has been a major contributor to increases in productivity over the past ten years. Of course, along with email came the scourge of spam. Criminals infect computers with trojan horse programs, creating collections of machines they control remotely to send millions of unsolicited offers for fake watches, pirated software, phony medications and ecard invitations to infect your computer.
As spam reaches 30, 40 or even 100 unwanted messages per day on a targeted account, it is becoming essential to automatically separate legitimate messages from spam. One tool available to senders of legitimate emails to aid the recipient in this process is to digitally sign their messages, allowing the recipient to establish a level of comfort that the message actually came from the indicated sender.
Continue reading “Digitally-Signed Email: Authentication and Digital Signatures”
The Packet-Switched Telecommunications Network
Over the past fifty years, several attempts have been made to develop converged networks: networks with “dial tone” that supports all communications: speech, music, text, graphics, images and video. For a number of reasons, convergence strategies employing ISDN and ATM were unsuccessful and did not gain critical mass. This time, it appears that packet-switched network service using IP will gain enough momentum to become the new kind of plain ordinary telecommunications service.