View Single Post
  #19   Report Post  
Posted to uk.telecom.voip,uk.d-i-y
David Woolley[_2_] David Woolley[_2_] is offline
external usenet poster
 
Posts: 36
Default VoIP Handset that uses a wi-fi connection rather then wired?.

On 15/08/18 02:01, John Rumm wrote:

A high quality VoIP channel only needs 64 Kbps (and in reality you can
do "ok" quality in less). Jitter on a link running at many Mbps is
unlikely to have much knock effect on a single VoIP channel.


The many Mbps is the burst rate once the device has found a clear bit of
air time. The latency is waiting for that clear air time. Also VoIP
bursts are very short, but there are many of them. They need to find
clear air time 50 times a second, and they need to do so within a few
milliseconds, each time.

In any case, I'm not going just on the theory. It is empirically
reported by people who have tried it that Wifi doesn't work well for
real time voice.