GSM-R was the first generation of digital train radio. The GSM technology already used for public mobile radio in conjunction with GPRS for data exchange was extended to include safety-relevant features and is an integral part of the ERTMS (European Rail Traffic Management System).
Wenzel Elektronik exclusively serves the fixed network side (FTS, Fixed Terminal System) of GSM-R and the successor technologies like SIP-R and eventually FRMCS/MCPTT.
With our SIP-R system we offer a bridge technology between GSM-R and FRMCS/MCPTT.
It allows a simple migration of an FTS, e.g. based on MACS-R, to a pure IP solution. Dispatcher terminals, in some cases also servers, can then be used in FMRCS/MCPTT systems via subsequent software updates.
SIP-R / LTE-R
Georedundant SIP-R dispatcher system
SIP-R is an ETSI standardised EIRENE compliant use of the SIP protocol (Session Initiation Protocol) as a transition from the TDM (Time Division Multiplex) world of a GSM-R MSC to the IP world of a modern FTS.
The dispatcher system uses this protocol to send or accept calls via a gateway to the MSC.
The LTE-R technology already actively used outside the EU is also supported by
the SIP-R or SIP interface. In this case no gateway (E1/SIP-R) is necessary.