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intermediate 7 levels · ~15 min

TDM Routes for Beginners: Zero to Hero

Legacy circuit-switched telecom (T1/E1/PRI) and how it bridges to modern VoIP — general industry knowledge, since 6X's own wholesale interconnect is SIP/IP-based.

Prerequisites
Recommended: complete VoIP Basics or SIP Trunk Basics first.
What You'll Learn
  • Understand what TDM is and why some businesses still use it
  • Know the main TDM interfaces (T1, E1, PRI, BRI) and signaling types
  • Understand how TDM-to-VoIP gateways bridge legacy hardware to modern SIP
  • Spot fake or unreliable TDM/gateway providers
  • Find customers who still run legacy PBX hardware

Powered by 6X – your legacy-to-VoIP bridge guide! TDM (Time Division Multiplexing) is the traditional circuit-switched telecom technology (T1/E1/PRI) still used by some legacy PBX systems.

6X's own wholesale interconnect to resellers is SIP/IP-based, not a literal TDM circuit — this course teaches the general technology so you understand how to serve customers still running legacy hardware, typically via a TDM-to-VoIP gateway on their end.

Course Outline
TDM Basics – The Old-School Telecom Backbone
TDM Technologies – Know the Hardware
Simulate TDM-to-VoIP Conversion
Serving Legacy Customers – A Real Niche
Compliance & Avoiding Bad Gateway Vendors
Finding Legacy-Hardware Customers
TDM Legend Status Unlocked!
Quiz
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