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Independent reference on the Future Railway Mobile Communication System
FRMCS ATLAS

Knowledge · reviewed 02 Oct 2026

Standards & specifications

Contents
  1. Reading status correctly
  2. Sources by body

Short answer

FRMCS documents come from several bodies: UIC (user requirements and programme documents), ETSI TC RT (railway system specifications), 3GPP (underlying mobile technology) and ERA (European regulatory framework). Always check document version and status — draft, published, or referenced by regulation.

Browse all 65 catalogue entries (60 published, 3 draft, 2 in development) →

Reading status correctly

  • Planned – announced work, no document yet.
  • Draft – document exists but is not final.
  • Published – formally released by the issuing body.
  • Referenced by regulation – cited in a binding legal act (separate step).

Sources by body

The Standards page records each document with version, status, date and the date we last checked the original source.

Cite this page

Standards & specifications. FRMCS Atlas. /knowledge/standards-and-specifications (last reviewed 2026-10-02). Markdown version

Related

Sources

  1. [1]FU-7100 – FRMCS User Requirements Specification — UIC, 5.0.0 (19 Feb 2020)
  2. [2]ETSI TS 103 764 — System Architecture — ETSI TC RT, v1.1.1
  3. [3]3GPP TS 22.289 – Mobile communication system for railways (ETSI TS 122 289) — 3GPP / ETSI, V19.0.1
  4. [4]CCS TSI Appendix A – mandatory specifications (ETCS B4 R1, GSM-R B1 MR1, FRMCS B0) — ERA