Understand

1.1–1.3Lessons▼

• 1.1Why railways need specialised communication

  You explain operational communication needs using a railway example.

• 1.2People, roles, workplaces and applications

  You distinguish person, role, workstation, device and application.

• 1.3GSM-R and EIRENE: today's foundation

  You explain the GSM-R communication path and the roles of the EIRENE FRS and SRS.

• 1.4Why FRMCS is being developed

  You explain the renewal needs, benefits and migration effort associated with FRMCS.

• 1.5The FRMCS map

  You assign an exchange to application, service stratum and transport stratum.

• 1.6Voice and operational reachability

  You explain role-based addressing, group communication and priority.

• 1.7ETCS, ATO and other railway applications

  You separate ETCS and ATO responsibilities from their communication provision.

• 1.8Quality, availability and security

  You distinguish data rate, delay, availability, security and safety.

• 1.9Standards, versions and maturity

  You distinguish specification, applicability, implementation and evidence.

• 1.10From GSM-R to FRMCS: final case

  You explain a mixed-system map including migration and interworking.