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I didn't get them on my cellphone which was connected through the KPN mobile network, appearently there is some provider dependency here
by fsiefken 7y ago
I didn't get them on my cellphone which was connected through the KPN mobile network, appearently there is some provider dependency here
- jacquesm 7y agoYes, access to the base stations in the network still goes through the provider and apparently that is the layer that has problems with interfacing to the outside world. Intra KPN traffic works just fine, including SMS.
- pbhjpbhj 7y agoYou might not have it enabled? Do you have a recent Android/iOS device?
- tjohns 7y agoEach provider uses a different cell tower (or at least their own antennas on a shared mast), with their own independent radio frequencies. "All devices in cell" is still accurate. Each cell belongs to a single provider. It's up to the network backend to make sure all providers get the emergency message at the same time to forward.
- jacquesm 7y ago> Each provider uses a different cell tower This is incorrect. A lot of providers share infrastructure, there are even providers without infrastructure.
- tjohns 7y agoYou are of course correct. But getting into the details behind MVNOs and roaming is a much more complicated topic than I'd want to type into a small comment box, and not really relevant to the issue at hand. :) My point is just that CMAS-style cell broadcasts need to be repeated by each cell site, and cell sites aren't universally shared by all carriers.
- jacquesm 7y agoIt appears the problem here was at a higher level, the signalling fabric that transports the data for call setup, teardown, roaming and SMS, and to complicate matters even further apparently the 4G network is where the problem originated but it had effects far outside that. That's also why the whole thing appeared so patchy from outside.