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Why We Need PTC, and How Some Railroads are Already Moving on It

By: Paula Bernier, TMC Executive Editor

I’ve always thought of trains as one of the safer modes of transportation. But recent high-profile train accidents remind us that even vehicles on tracks can run into problems that can result in crashes, with potential results including death, injury, and property loss.

You may remember the tragic Amtrak accident on May 12 in Philadelphia. It killed eight people and injured more than 200 others. The train derailed while taking a curve for which the maximum recommended speed was 50 miles per hour, but preliminary analysis from the National Transportation Safety Board indicates the train was moving at 102 miles per hour. This wreck put new focus on the need for positive train control, better known as PTC, systems.

Railway Operators Moving to IP/MPLS for many Good Reasons

By:  Mae Kowalke, TMCnet Contributor

As greater demand is being placed on Railway operators to deliver services that are more bandwidth hungry, many are starting to make the switch away from the SONET/SDH architectures that have traditional run their communications network and move toward the more robust IP/MPLS architecture. In fact, Europe is illustrative of this with rail transportation systems in Milan, Paris and Portugal already enjoying the operational and customer experience benefits of making the move.

There are many reasons why railways are using IP/MPLS for their communications networks but two major ones are:

  1. IP/MPLS offers high network availability and resiliency through “Non-Stop” technologies such as Non-Stop Routing (NSR), Non-Stop Services (NSS), Link Aggregation Group (LAG) and Fast ReRoute (FRR).
  2. IP/MPLS enables traffic engineering and isolation, since railway communications cannot afford to fail.

Railways See the Benefits of IP Convergence - Customer and Network Operator Perspectives

By Mae Kowalke, TMCnet Contributor

TDM just doesn’t cut it any longer when it comes to rail communications. Railway operations decision-makers the world over are moving from TDM-based rail solutions to a single IP-based communications network that maximizes bandwidth and delivery true multi-tenancy. When it comes to communications, rail solutions in 2013 are all about IP convergence.

“The necessity of an IP network transformation is due to the increasing need to host more services and its ability to converge these onto a single piece of infrastructure to provide a truly multi-service network,” Stefano Pasetti, director of mobile and telecommunications for Milan’s metro rail service provider, Azienda Trasporti Milanese (ATM), said recently in a blog post by Alcatel-Lucent.

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