Release ledger
Canonical Atlas record
TR 22.989
Study on Future Railway Mobile Communication System
Release evolution
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Use indexed version, Work Item and Change Request evidence to see what changed around this specification. This is an evidence trail, not a clause-by-clause normative diff.
Rel-20 snapshot
Work affecting this release
23 indexed Change Requests · 1 connected Work Item.
Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0039 — Cleaning gap analysis comments in the TR 22.989, related to missing normative requirements
CR 0036 rev.4 — New use case: Train driver takes-over an Ad hoc Group Call from another FRMCS device
CR 0038 rev.4 — New use case: Availability status of a MC User (Presence of a FRMCS User)
CR 0037 rev.3 — New use cases: Merging of two multi-train voice communications by the train driver
CR 0033 rev.1 — New use cases: Merging of two multi-train voice communications by Train Controller (Ground FRMCS user)
CR 0032 — Update of requirements and gap analysis for multi-train voice communication for Drivers and Ground FRMCS User(s) using Ad hoc Group Communications
CR 0031 rev.2 — New use case: Call forwarding for Ad hoc Group Calls
CR 0034 — New use case: Availability status of an MC User (Presence of FRMCS User)
CR 0031 rev.1 — Update and gap analysis of diversion of an incoming voice communication
CR 0031 — Update and Gap analysis of Transfer (Divertion) of an incoming voice communication
CR 0037 rev.2 — New use cases: Merging of two multi-train voice communications by the train driver
CR 0037 — New use cases: Merging of two multi-train voice communications by the train driver
Version history
Indexed versions
Showing 17 of 17 indexed versions.
Atlas classifications
Meaning and provenance
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Work Items
Standards work connected to TR 22.989
Study on Future Railway Mobile Communication System
Study on FRMCS Phase 4
(Small) Technical Enhancements and Improvements for Rel-18
Study on FRMCS Phase 5
Study on FRMCS Phase 6
Knowledge graph
Related standards
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