> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/voice-and-media/gsm-r.md).

# GSM-R

GSM-R, the GSM variant used for railway communication under ERTMS, and where TelcoBridges gateways fit into a GSM-R network.

GSM-Railway (or GSM-R) refers to a variant of GSM used with railways. Wikipedia describes it as "A sub-system of European Rail Traffic Management System (ERTMS), it is used for communication between train and railway regulation control centers. The system is based on GSM and EIRENE - MORANE specifications which guarantee performance at speeds up to 500 km/h (310 mph), without any communication loss."

### TelcoBridges and GSM-R

TelcoBridges supports GSM-R with its [Tmonitor](https://prosbcdocs.telcobridges.com/tmedia-documentation/products/tmonitor/tmonitor) line of network monitoring solutions. These have been adopted by various national railways in Europe.

### References

* [Wikipedia article](http://en.wikipedia.org/wiki/GSM-R)
* [GSM-R Industry Group](http://www.gsm-rail.com/)


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