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

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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