A SIP Gateway is a device that processes and transmits voice data from an analog device to a digital device. SIP gateways are used with legacy phone systems to enable IP-PRI and can come in two forms:
If you’re using an older, on-premise PBX, it will use a physical SIP gateway to transmit an analog signal into a digital format. But if you’re using a program that supports voice and/or video data, chances are it’s using SIP gateway software to process your data.
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