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by RF_Savage 1222 days ago
Does any handset anywhere actually implement LTE Direct? My understanding has been that it was specified for Public Safety LTE to have feature parity with TETRA.

Especially the infrastructure-less TETRA DMO Direct Mode Operation for ad-hoc communications with the trunking infrastructure down, out of range or over capacity.

And everybody in the Public Safety radio space seems to always laugh when LTE Direct is brought up. Apparently poorly specified and adopted by no vendors.