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Difference between IP PBX and VoIP box

What is the difference between an IP PBX and VoIP box?

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They are the same, in reality, as both provide call control and telephone switching software. The VoIP boxes tend to be more plug-and-play and are for small and midsized businesses. They are based on Open Standards and offer connection to ISDN or analog fixed line networks.

This was first published in May 2006