For most VoIP services yes you do need
a computer, and definately yes for free VoIP services. Only the
specialised paid for services negate the need for a computer.
You will still need an internet connection of
course but computer-less configurations mean you will need specialised
hardware generally in the form of a router. (thats r-ooo-t-er and not r-ow-t-er
;o) please take note!)
Business setups (ie mega money) have very
specialised routers and switches to handle VoIP calls, usually across
their own private networks
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