Nuacom's Free VoIP Internet Speed test
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What do we Measure?
For Each device to have a clear conversation with no loss of audio, each device must have sufficient minimum download of
85kbps and upload of 85kbps simultaneously (170kbps total)
the amount of devices in use (IP phone / desktop app/ mobile app) must also be considered as this scales
with each device in use.
for example, if you have 10 devices in use (IP phone / desktop app/ mobile app)
you will require around 1.7 Mbps of bandwidth.