3 ms·
Sending a wake call to come out of low power states is what the old "Morse code" audible pulses of interference on radio in the GSM days were doing No, that's
by userbinator 1y ago
Sending a wake call to come out of low power states is what the old "Morse code" audible pulses of interference on radio in the GSM days were doing
No, that's the phone itself transmitting in its TDMA timeslots. https://en.wikipedia.org/wiki/Time-division_multiple_access#2G_systems https://en.wikipedia.org/wiki/Time-division_multiple_access#...
- ggm 1y agoSo I got the directionality wrong, but it did seem to presage a call event: you heard the distinctive tones before the ring. Would you agree it's part of the re-initialisation sequence, even if not directly caused by the transmission infra talking to the phone?