Core Insights: TDM Mesh Networks - A Simple Alternative To Leaf-Spine ST2110

July 21st 2021 - 09:30 AM
Tony Orme, Editor at The Broadcast Bridge

IP is delivering unprecedented flexibility and scalability for broadcasters. But there is a price to pay for these benefits, namely, the complexity of the system increases significantly as we add more video and audio over IP.

Timing is fundamentally important to broadcast workflows for video, audio, and metadata streams. Although ST2110 has successfully abstracted away the media essence from the underlying transport stream, accurate timing is still needed.

In this Core Insight we look at an alternative to ST2110 while at the same time maintaining many of the benefits of IP. That alternative is TDM (Time Domain Multiplexing). Using high-speed fiber cabling and switching nodes doubling as SDI, AES, analog, and IP interfaces, TDM delivers mesh networks that provide broadcasters with a contrast to the leaf-spine model.

This Core Insight, sponsored by Riedel, discusses the benefits to IP by using TDM mesh networks. It describes how TDM works, why the signal latency is predictably low, and how a fully IP, SDI, AES and analog system operates.

With a specialist use-case outlining the Eurovision Song Contest, TDM mesh networks demonstrate how they overcome many of the challenges of ad-hoc live events.

Download this Core Insight now if you are a technologist, engineer, or their managers and you need to understand how TDM operates to keep infrastructures simple.

Supported by

You might also like...

PTP V2.1 – New Security & Monitoring For IP Broadcast Infrastructures - Part 2

In the last article in this series, we looked at how PTP V2.1 has improved security. In this part, we investigate how robustness and monitoring is further improved to provide resilient and accurate network timing.

PTP V2.1 – New Security & Monitoring For IP Broadcast Infrastructures - Part 1

Timing accuracy has been a fundamental component of broadcast infrastructures for as long as we’ve transmitted television pictures and sound. The time invariant nature of frame sampling still requires us to provide timing references with sub microsecond accuracy.

Creative Audio - Noise Reduction With Bob Bronow

Dialogue is king in television. Let’s face it, you don’t watch an episode of your favorite police procedural or reality show just to listen to the sound design or the incidental music. But whether the content is scripted or …

Creative Audio - Broadcast Crowd Sound

When televised sports events began to return after the initial coronavirus lockdown in 2020, U.S. broadcasters faced a dilemma. With no spectators in attendance, what do you do about the lack of crowd noise? This is the fascinating story of…

Timing: Part 6 - Synchronization

The need for synchronization rears its head in so many different endeavors that it has to be accepted as one of the great enabling technologies.