top logo netmoduleheader backgroundclaim netmdule: we speak embedded!

Available Extension

  • GSM-R
  • LTE450
  • LTE750, Cat 6
  • CDMA450
  • IBIS
  • CAN
  • RS-232
  • RS-485
  • Audio
  • GNSS with Dead Reckoning
  • Mass storage

Extension Modules

Compile your use case specific product variant by enhancing the standard routers with extension modules

Extension Modules

The NetModule Router architecture is based on a modular concept that allows a high degree of product customization. Providing a product family specific number of PCI express mini card slots on the router main board, the router may be extended with up to six extension modules.
All product variants are assembled and verified by NetModule to ensure type approvals and the standard conformity.

  • Description
  • Specifications


To enhance the NetModule standard cellular modules with LTE, UMTS and GSM, the options GSM-R, LTE450, LTE750 and CDMA450 are available. These make it possible to connect the NetModule Routers with the communication infrastructure of the railway operators and to enlarge the transmission distance. In addition, we support LTE Cat 6 standards with 300mps DL or Enterprise LTE.

By use of the CAN and IBIS modules the routers can interact with the digital operational control system in vehicles and trains.

The RS232 and RS485 modules enhance the functions of the NetModule Routers with serial connection possibilities.

Emergency calls, radio communication and VoIP can be realized with the audio module.

Precise localization of vehicles can be realized with the GNSS option. This includes also Dead Reckoning, which enables to keep high accuracy positioning by using information from various sensors (motion, direction and height) to calculate the current position, even when GNSS only positioning is temporary difficult or impossible.

The mass storage options enable the possibility to - regardless of the internet connectivity – access information such as documents, images, audio and video data, etc. and provide them as offline media.

Note: Not all extensions are available for every product!


GSM-RFrequency bands: GSM-R/ EGSM900/ GSM1800
Data service: GPRS class 10 up to 85.6 kbps (DL) and 42.8 kbps (UL)
Data only
LTE450Frequency: LTE FDD Band 31 (450 MHz) as well as B3, B7, B20; UMTS B1, B8
Data rates: LTE 100 Mbps Downlink/50 Mbps Uplink, UMTS 42Mbps Downlink/5.76Mbps Uplink
LTE750, Cat 6Frequency: LTE FDD Band 28 (750MhHz) as well as B1, B3, B5-B9, B18, B19, B21, B38-B41
Data rates: 300 Mbps Downlink, 50 Mbps Uplink
CDMA450CDMA 1xEV-DO Rev-B Module 450MHz, Cellular 0.25W Power class 3
Frequency bands: Band Class 5 Block Designators A + B
Transmit frequencies: 452.000 - 457.475 MHz
Receive frequencies: 462.000 - 467.475MHz
Data rates: max. 14,7 Mbps downlink / 5.4 Mbps uplink
IBISIBIS Peripheral Device according to VDV 300 (Slave)
Bit: 1200 bit/s
Galvanic isolation: 1500 VDC
Connection: Extension connector
CANProtocol: CAN V2.0B
Signals: CANH, CANL, GND
Signal level: High > 2.75V / Low < 2V
Bit rate: Up to 1Mbps
Galvanic isolation 1500 VDC; no internal bus termination
Connection: Extension connector
RS-232Signals: TX, RX, CTS, RTS
Signal level: High > 5V / Low < -5V
Bit rates: 600, 1200, 2400, 4800, 9600, 14400 (not supported by the Linux stty), 19200, 38400, 57600, 115200, 230400, 460800, 921600 bits/s
Parity: None/Even/Odd
Connection: Extension connector
RS-485Signals: RS485A, RS485B
Signal level: Differential Output Voltage, Loaded 1.5V – 3.6V
Bit rate: 600, 1200, 2400, 4800, 9600, 14400 (not supported by the Linux stty), 19200, 38400, 57600, 115200, 230400, 460800 bit/s
Parity: None/Even/Odd
Connection: Extension connector
AudioIn: level (0dB corresponds to 721mVRMS @ 1kHz) / impedance 36kΩ @ 1kHz
Out: max. level -1.5dBu (0.65 VRMS, unloaded) / output level software controllable / impedance 375 Ω @ 1kHz
Connection: Extension connector
GNSS with Dead ReckoningGPS (1575.42MHz) / GLONASS (1602MHz) / BeiDou (1561.098MHz) / Galileo Ready
Channels: 27
Accuracy: 2 meters
Sensors: 3D accelerometer & 3D gyroscope
Mass storageInternal storage for customized information
32 GB / 64 GB / 128 GB / 256 GB / 512 GB / 1 TB