Lower Bounds of The Narrow Bands
Voice is becoming a standard feature of any messaging app on mobile phones, in various forms using many different protocols. There’s the old guard, whom I will refer to as “Skype”. Some tough questions have been thrown their way by many groups who support a free Internet. There’s Google Voice, which is not really VoIP. Apple is playing around in the hedge maze inside their walled garden with iChat. There’s also Facebook, who is rolling out voice calling in Canada and the USA in their Messenger app on iOS.
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