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What is IP telephony? What are the Businesses Use Cases?

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IP telephony encompasses telephony communications over IP networks, such as the internet. Read how IP telephony works and how it differs from VoIP.
IP telephony (Internet Protocol telephony) is a general term for technologies, products and services that use the Internet Protocol's packet-switched connections to support voice calling, voicemail, video calling, video conferencing, faxing and instant messaging.

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