alt Hacker NewsAre you sure about that? My understanding was that the eCall self test does not connect to a network.
That’s stated on the eCall page linked above. Do you have a source that contradicts that?
Are you sure about that? My understanding was that the eCall self test does not connect to a network.
That’s stated on the eCall page linked above. Do you have a source that contradicts that?
Yes, I am sure.
Annex VII only rules out connecting to the PSAP/112 side, not routine network attaches. To detect faults in the “means of communication”, the IVS has to verify that the SIM, baseband and RF path are actually usable, and you can’t test that without a network attach.
In practice that’s what all current eCall implementations do. The modem attaches to the cellular network at each ignition so it can confirm it’s capable of placing an eCall. If you block the modem or antenna, the IVS fails its self-test and the vehicle is no longer roadworthy.