Cab radios and on-board communication
With an above-average time between failures, our cab radios are virtually maintenance-free.

With an above-average time between failures, our cab radios are virtually maintenance-free.
Next generation: The future of GSM-R with the benefits of IP communications (FRMCS)
Communication devices for every railway application

Operational conditions
Systems and devices are compatible with a wide range of operational conditionsĀ supporting nearly all trains classes.

More than 100,000 hours MTBF
High mean time between failures (MTBF) for cab radios reduces overall lifecycle cost.

Adaptable to customer requirements
Specific cab radios are suitable for use in a global GSM-R environment and in specific markets.

EIRENE-compliant
Fixed cab radios comply with current EIRENE specifications.

Remote management and software updates
Asset management in the Cloud enables remote software upgrades.

ETCS data communication
Provides an essential link for the transmission of Radio Block Center (RBC) to the train, where an in-cab display allows the driver to control the train without reference to line-side signals.
Cab Radios

Airlink 400 Voice Cab Radio
Our Nexus Voice Cab Radio offers a number of new features to improve functionality and performance. The Nexus Voice Cab Radio can have two types of driver control panels, and is designed to be installed with either one or two textual driver control panels.
It features a unique gland box system allowing fast installation and replacement, and an optional uninterrupted power supply unit providing either two or four hours backup power in the event of train power supply failure. A demonstrated MTBF in excess of 250,000 hours minimizes downtime and total lifetime costs.
GPS is integrated into the processor board along with the option of 2 x LTE modules and a Wi-Fi module for multiple data transfers for an array of applications. A new GSM-R transceiver optimizes the shielding of unwanted interference from publicly operated networks. This is an essential addition with the ever-encroaching public 3G/4G networks threatening to interfere with the rail communications network.
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Airlink 500 Voice Cab Radio
The Siemens Airlink 500 Voice Cab Radio series builds upon the 400 series. Introducing a 19āā rack solution which allows for a number of different performance and enhancing modules to be easily interchanged, depending on specific requirements. It includes an interference resistant transceiver, and a GSM-R transceiver optimising the shielding of unwanted interference from publicly operated networks.

Airlink 500 FRMCS Gateway
The MCG Gateway (SFG-554) has been developed to address the flexible data requirements for the migration to FRMCS. The radio offers 5G voice and data connectivity and the configuration can be adapted to the customer's needs. As well as Wi-Fi and GPS, the Gateway includes embedded accelerometers, which allow for several location-dependent applications to run. As well as supporting the MCX customer requirements, the Gateway system provides a wide range power supply and three or more 5G processor cards at different frequencies.

Airlink 641 MCX Cab Radio
Our Nexus MCX is our next generation compact Cab radio and our answer to the Tetra/GSM-R convergence to IP technology. The Nexus MCX builds upon our 20 yearsā experience in the Cab radio market.
The Nexus MCX also offers built-in Wi-Fi and GPS connectivity as well as embedded accelerometers. This also offers the opportunity to run a number of location dependent applications like Connected-Driver Advisory System and Remote Condition Monitoring.
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Airlink 400 Transportable Cab Radio
Our GSM-R transportable cab radio is a self-contained unit consisting of a GSM-R radio complete with a textual MMI, handset, and loudspeaker in a robust case. The transportable cab radio is designed to be easily carried between trains and installed with minimum effort and expertise. It can be used as an emergency backup or, in trains without a cab radio, permanently installed.

Airlink 500 Dual Mode Radio

Airlink 500 Data Cab Radio
Our Nexus 19" Data Radio builds upon the SDR-200 ETCS on-board data radio by introducing a 19" rack solution that meets the EIRENE 8/16 specification. The Nexus 19" Data Radio provides an important link for the transmission of movement authorities from the Radio Block Center (RBC) to the train where an in-cab display allows the driver to control the train without reference to line-side signals. The radio is a compact unit designed for ease of installation with ETCS equipment from other suppliers. All of the main components within the data radio are fully duplicated to provide the necessary high availability the application requires.
Relevant information and intuitive interaction at all times

Textual drivers control panel (TDCP)
Our textual drivers control panel (or Human Machine Interface) is one of the smallest available on the market. Interactive dialogues between our design engineers, drivers, and human factors groups resulted in a driverās control panel layout that is both intuitive and non-distracting ā making it easy to use. Drivers experience positive tactile feedback, which confirms that the desired button function has been achieved.

Graphical drivers control panel (GDCP)
Our graphical drivers control panel (or Human Machine Interface) was designed to take account of environment size and ease of installation. It includes an integral loudspeaker and features a color TFT display and illuminated pushbuttons enabling clear uncluttered communications to the driver. The illumination and backlight intensity is set by the driver, with automatic compensation control based on external ambient light levels. The backlit display also provides a wide-viewing angle. The high display resolution allows any character set to be presented.
Siemens Multiband Antenna (SMBA)
Siemens Mobility's Multiband Antenna is an innovative solution that builds upon existing GSM-R antennas by expanding their capabilities. Adapting to the latest advances in our on-board Cab Mobile range, including the migration from GSM-R to FRMCS, our solution provides an alternative to the fitment of multiple antennas to trains.
Train digitalization: On-board applications

C-DAS ā Connected Driver Advisory System
Driver advisory systems support train drivers in achieving a consistent and economical driving style. Implemented as a software application, the system usually makes use of a trainās cab radio. Siemens Mobility cab radio hardware is used to provide 4G and GPS functionality, thereby facilitating real-time updates by interfacing with the Siemens Mobility Train Management System (TMS). Real-time updates of route data, timetables and temporary speed restrictions will improve train punctuality and optimise line capacity. The Siemens Mobility Driver Advisory System is offered with three connectivity solutions to suit a customerās needs.

Trainborne Condition Monitoring (TBCM)
Using TBCM on a fleet of trains is an innovative and inexpensive way to monitor rail networks. Each TBCM system employs sensors to record the train's movements across three spatial axes. Aggregating this information across several runs provides accurate warnings and information on track defects, such as voids.
Trainborne Condition Monitoring can be configured to suit individual customers' needs and specifications.

Let administrators manage cab radios remotely
The Siemens Mobility Cab Radio Remote Management Terminal (CRMT) lets administrators manage cab radios remotely via an IP connection. This allows for easy updates of a cab radioās software, phone book entries and message templates. The management terminal is able to keep track of a whole fleetās cab radios via their types and serial numbers. Error logs and language files can also be administered. Maintenance and management tasks can be scheduled to run while a radio is idle, while automating certain tasks is also possible. Our Cab Radio Management Terminal is offered in two connectivity solutions to suit a customerās needs.

