ITSP – Internet Telephony Service Provider

Internet Telephony Service Providers (ITSPs) allow users to use their existing internet connection to operate an internet, IP, SIP or VoIP phone. By combining voice and data on the same digital infrastructure, ITSPs can offer Unified Communications (UC) across multiple devices. Gateways can convert voice calls and fax communications from a Public Switched Telephone Network (PSTN) for phone-to-PC calls.

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