3 ms·

Didnt GSM(2G) work same way with dedicated regular timeslots per call? I dont know about 3G, but 4G finally introduced and 5G cemented packetized voice data wit

• joha4270 2y ago
  The interesting point wasn't the timeslots, but their size. Yes, 2G has fixed time slots, but a slot is used for a lot longer than a single (half?) sample.
  • miki123211 2y ago
    2g (and all other standards after it) use 20-millisecond frames. It needs to send 8KHz audio at much lower bitrates (~14Kbps instead of 64Kbps), and you can't do that with raw PCM if you want decent quality. This means you need lossy compression and a codec, and those need far more than a single sample to work well. CDMA was similar, not sure what their frame size was exactly, but it was somewhere in the vicinity.