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Best of Breed: Telecommunications Training – Since 1992
telecommunications certification
Telecommunications Certification
Get the knowledge needed for today's telecom - plus TCO Certification proving it!
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online courses and certification packages
Online Courses
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  • The PSTN  •  Voice over IP
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OPTION: BOOT CAMP August 21 - 25

boot camp
March 27-31
Get fully up to speed on today's network: IP, VoIP, SIP, MPLS and more with this five-day BOOT CAMP.
For non-engineers in need of a broad update and newcomers getting up to speed.
Bust the buzzwords, demystify the jargon, understand the technologies and how it all fits together... in plain English.
Course 2221 Fundamentals of Voice over IP - Introduction
Newsletter special:
$20 off
Use coupon 1260
Ends soon
We're celebrating the release of new course Fundamentals of Voice over IP with $20 off!
A full introduction to VoIP and SIP, what they are, how Voice over IP works, and what all the jargon and buzzwords mean.
Solid knowledge you can build on!
TCO wins recognition in the the prestigious Toms IT Pro Best Telecommunications Certifications for 2017
TCO CTNS recognized as a 2017
Best Telecommunication Certification
Tom's Hardware was established early on the web for trusted reviews of hardware.
Again this year, CTNS is recognized in
"Best Telecommunications Certifications"
Teracom Training Institute wikipedia page
Teracom Training Institute
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Telecom 101 4th Edition 2016
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March 2017
news and articles

• BOOT CAMP Silicon Valley
  March 27-31
  2-for-1 special

• $20 off online Course 2221
  Fundamentals of Voice over IP

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IP packets, addresses and routers

SIP Trunking

Course 2206 Wireless Telecommunications - Introduction

Course 2206 Wireless Telecommunications - Introduction
Wireless Basics
Free sample
CTNS Course 2206 Wireless Telecommunications
Voice in IP Packets
Free sample Course 2221 Fundamentals of Voice over IP
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