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What do you mean with "HDVoice"? On landline connections this usually means G722. G711u/a is definitly not "HD".
by gsich 8y ago
What do you mean with "HDVoice"? On landline connections this usually means G722. G711u/a is definitly not "HD".
- namibj 8y agoI assume the usual wideband codecs used with VoLTE.
- IshKebab 8y agoI don't know what technology it is specifically, but it's a brand name they used for actual high quality calls. Think, 128 kB/s MP3, rather than the standard cups-and-string quality. It only seems to work on mobile.
- gsich 8y agoI know the difference, used G722. On mobile its G722.2, a totally different codec, but with the same ~7KHz range. But there were some companies that advertised a lower frequency range as "HD".
- ahoka 8y agoHe probably means Adaptive Multi-Rate Wideband (AMR-WB) [1], AKA G.722.2. There is a common misconception that it is VoLTE only, but actually it works pretty well on 3G too. It is night and day compared to legacy codecs. 1. https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_Wideband https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_Wideband