VoIP Trunk Service Providers at internet Business blog. Any business with more than a few outside phone lines knows that trunk lines are the way to go. The next question is what type of trunk service to get. You might think that with a VoIP telephone system, the obvious choice is SIP Trunking. But is it? Take a closer look at what’s available and then decide.The idea of telephone trunking originated with the phone companies back when Ma Bell ran the industry. When phones were new, a couple of
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