NG eCall regulatory system divides into three hierarchical layers: top-level legal regulation layer, middle technical harmonized standard layer and bottom detailed test specification layer completely different from single-standard legacy traditional eCall EN16454.
1.(EU)2024/1180 core milestone rules: No new M1/N1 vehicle type approval for legacy 2G/3G eCall after Jan1 2026; all newly registered EU M1/N1 vehicles must equip valid NG eCall post Jan1 2027.
2.(EU)2025/1871 supplementary amendment: Two critical updates – enhanced backup battery 5+56+5min discharge cycle mandatory from 2027 new certification and compulsory fault simulation document submission for non-reproducible abnormal system failure cases.
3.UN R144 global unified regulation governing vehicle crash trigger logic, backup power baseline and periodic system self-test requirement accepted by EU, Russia, Korea and multiple global automotive jurisdictions; original framework regulation (EU)2015/758 still valid after multi-year amendment.
Layer2 Core Technical Harmonized Standard
1.EN17184:2024 (Top core IVS standard): Specifies full IMS SIP protocol, MSD V3 ASN.1 coding, VoLTE session setup and GNSS positioning requirement with newly added rollover, passenger quantity and EV battery parameter defined in standard appendix; inconsistent software protocol coding directly triggers full protocol test failure.
2.EN17240:2024 end-to-end conformance master standard splitting test into IVS terminal, MNO operator network and PSAP emergency platform three-part over 50 test cases covering complete emergency call full link validation.Audio specification clarification: ETSI TS103137 controls PSAP platform-side audio processing while IVS terminal voice quality strictly follows ITU-T P.1140:2021 & EN17240 embedded clauses for lab pass/fail judgment.
Layer3 Detailed Test Case Specification
1.ETSI TS103128: Full IMS conformance test suite aligned with EN17240 governing IVS registration, SIP transaction and MSD payload transmission test item design.
2.ETSI TS103683: MNO & PSAP platform interoperability specification only applicable for full-vehicle OEM operator network access certification unnecessary for standalone component IVS homologation.
Detailed Mandatory NG eCall Lab Test Items
1.Trigger Function Test: Manual SOS key initiation, automatic crash sensor trigger and full MSD V3 field coding validation.
2.IMS SIP Protocol Conformance Test (Core Test Item): Standardized IMS network attach sequence, SIP INVITE header completeness and failed network reconnection retry mechanism verification.
3.Full End-to-End IP Link Test: EN17240 simulated full link test across IVS-virtual MNO-virtual PSAP covering regular call, abnormal drop-out and emergency recall scenarios.
4.VoLTE Acoustic Test: ITU-T P.1140:2021 objective rating on echo cancellation, double-talk performance and ambient noise suppression highly prone to repeated tuning delay.
5.GNSS Positioning Test: CEP95% ≤3m open-sky benchmark with maximum 50m allowable deviation under urban canyon obstruction; EU NG eCall only mandates GPS+Galileo dual-constellation without compulsory Beidou (Beidou required exclusively for China AECS GB45672 certification).
6.Cellular Mobility Test: LTE-NR cross-network handover stability and emergency SIP session persistence during cell reselection.
7.EMC & Environmental Reliability Test: Full vehicle radiated/conducted immunity plus high-low temperature, vibration and salt-spray test with extra live emergency call validation during EMS interference injection.
8.Automotive Electrical Transient Test: ISO7637-2 load-dump and vehicle startup pulse anti-interference validation.
9.Backup Discharge Cycle Test: New mandatory multi-stage power endurance test enforced for post-2027 certification per EU amendment.
UN R155 Cybersecurity Clarification
UN R155 CSMS system certification targets full vehicle OEM type approval; standalone T-box component NG eMark certification has no regulatory R155 mandatory requirement despite possible vehicle factory supplementary security report submission request as separate commercial specification.
For NG eCall standard interpretation & test arrangement: BlueAsia Compliance | Benson: +13534225140
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