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.
CVA – Certified VOIP Analyst Course 2222 VoIP Architectures and Implementations Lesson 3 – VSPs: Internet to Phone e.g. Gmail Client
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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.
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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
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.
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.
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.