Introduction to GSM R

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Questions and Answers

What is the primary advantage of implementing GSM R in the SAR network?

  • Reduction in the number of train operators required
  • Elimination of all radio base stations
  • Increase in the train speed on the network
  • Significant improvement in the quality of voice communications (correct)

Which of the following best describes the function of GSM R within the railway system?

  • Enabling secure voice communications between Drivers/Pilots and the OCC (correct)
  • Controlling the train's speed remotely
  • Providing internet access to passengers
  • Monitoring train schedules via GPS

What feature does GSM R offer for communication during Shunting operations?

  • Real-time location tracking of trains
  • Communication using a handheld device direct to the In Cab Radio (correct)
  • Voice recordings of all communications
  • Automated control of shunting movements

How does GSM R enhance safety communications between drivers and the Operation Control Center (OCC)?

<p>Through relay via radio base stations constructed along the railway (A)</p> Signup and view all the answers

What type of communication does GSM R aim to secure?

<p>Voice communications between operational staff (B)</p> Signup and view all the answers

What will the OBU screen display if the Train number is not registered?

<p>***** (D)</p> Signup and view all the answers

What is the primary role of the GSM R On Board Unit even if it is not registered?

<p>To serve as the primary communication source (A)</p> Signup and view all the answers

Which piece of information is NOT required when giving or receiving a message?

<p>The time of day (C)</p> Signup and view all the answers

What should you always do before finishing a communication?

<p>Have the other person repeat the message back (A)</p> Signup and view all the answers

Why is it important to verify that you are speaking to the right person during communication?

<p>To avoid confusion and ensure safety (D)</p> Signup and view all the answers

What is the first statement that must be made during an emergency call using GSMR?

<p>This is an Emergency Call (A)</p> Signup and view all the answers

In what order should the information be stated during an emergency call?

<p>This is an Emergency Call, where you are calling from, what has happened (D)</p> Signup and view all the answers

Which of the following reasons is NOT mentioned in the emergency call protocol?

<p>Your function in the railway system (C)</p> Signup and view all the answers

What additional action should be taken if emergency services are needed during the call?

<p>Specify which emergency services are required (C)</p> Signup and view all the answers

Why is it important to state 'Where you are calling from' during the emergency call?

<p>To establish the exact location coordination (D)</p> Signup and view all the answers

What must be done within 3 seconds after pressing the emergency call button?

<p>Press the PTT button (C)</p> Signup and view all the answers

What happens when the emergency call button is pressed on the handheld GSMR?

<p>An emergency tone sounds for a maximum of 5 seconds (D)</p> Signup and view all the answers

What group ID is used for transmitting an emergency call in GSM-R?

<p>299 (D)</p> Signup and view all the answers

What mode is activated upon initiating an emergency call?

<p>Hand-free mode (B)</p> Signup and view all the answers

What occurs if the PTT confirmation is not received after pressing the button?

<p>The display switches back to the previously used state (A)</p> Signup and view all the answers

What is the first action that must be taken if the OBU fails to connect to the Network before departure?

<p>Report to OCC by other communication methods. (B)</p> Signup and view all the answers

What should be done if the OBU fails while the vehicle is in motion?

<p>Report this to the OCC and follow their advice. (C)</p> Signup and view all the answers

In the event of a failure to connect to the Network, what understanding must be established prior to movement?

<p>How communication between Driver and OCC will be managed. (C)</p> Signup and view all the answers

If the Network code 066 is not displayed on the OBU screen, what must not occur?

<p>Any movement until the issue is resolved. (D)</p> Signup and view all the answers

What is required after reporting a failure in service while on the move?

<p>Follow the advice given by the OCC. (D)</p> Signup and view all the answers

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Study Notes

Introduction to GSM R

  • GSM R stands for Global System for Mobile Communications Railway
  • GSM R improves voice communication quality on the SAR network
  • GSM R enables secure voice communications between Drivers/Pilots and the OCC
  • GSM R uses radio base stations built alongside the railway
  • GSM R enhances communication during Shunting using a handheld device connected to the In Cab Radio

GSM R On Board Unit (OBU)

  • If an OBU is not registered, the Train number will not be displayed on the OBU screen.
  • The OBU must be used as the primary source of communication, even if it's not registered.
  • The OBU is fully functional and available for use even if it's not registered.

Communication Procedures

  • When communicating by phone or radio, always state your name, duty, location, and verify the recipient.
  • Always repeat the message received to ensure understanding.
  • The receiver should repeat the message back.

GSMR Emergency Calls in Driving Cap

  • Pressing the REC Button on the GSMR in a driving cap initiates an emergency call to the OCC (Operational Control Center).
  • The call will be received by all trains in the area.
  • The following information must be communicated in order:
    • "This is an Emergency Call"
    • Caller's name and function
    • Location of the call origin
    • Description of the emergency situation
    • Location of the incident
    • Required emergency services

Railway Emergency Group Call

  • An emergency call can be made by pressing the emergency call button on the handheld GSMR device.
  • The emergency tone sounds for a maximum of five seconds.
  • The message "Emergency call in GSM-R/GSMASCI" appears on the display.
  • To initiate an emergency call, the PTT button needs to be pressed within three seconds of the emergency tone.
  • If the PTT confirmation is not given, the display returns to its previous state.
  • The emergency call group uses the group ID 299.
  • If an emergency call has been previously initiated, pressing the emergency call button will end the call.
  • All current services are canceled when an emergency call is initiated.
  • The handheld initiates a call with high priority when an emergency call is initiated.
  • The hands-free mode and loudspeaker are activated during an emergency call.

OBU Failure

  • If the OBU fails to connect to the network before departure, the driver must report the fault to the OCC using other communication methods, such as a mobile phone.
  • Before moving, the driver and OCC need to agree on how communication will be managed without GSM-R.
  • The driver will likely only be authorized to move to the next known communication area.
  • If the OBU fails while the vehicle is in motion, the driver must immediately report the failure to the OCC.
  • The OCC may provide instructions for continuing the journey, potentially involving changes to the movement authority.

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