
RSSB Page 18 of 87
GSM-R user procedures (cab radio Version 2)
Figure 2 – GSM-R fixed terminal
3.1.2 On-train equipment
The GSM-R equipment installed in the driving cab includes a cab radio assembly, user
interface, handset and cradle, cab loudspeaker, roof-mounted antenna and associated
cabling. The cab radio may also have its own battery to maintain power in case the
normal power supply is interrupted.
The separate user interface (display unit) has a display and push buttons and is linked to a
handset and loudspeaker.
The handset, including the speaker, the microphone and the PTT button, sits in a cradle
which the driver can reach easily.
Figure 3 – The GSM-R cab radio, handset and cradle
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