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SIP Trunk

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**SIP Trunk**

What is SIP Trunk?

A SIP trunk is a digital connection that enables businesses to make and receive phone calls over the internet using Session Initiation Protocol (SIP). It replaces traditional phone lines (PSTN) or ISDN lines, offering flexibility, scalability, and cost savings by leveraging a broadband internet connection for voice communication. SIP trunks are commonly used to connect a business's PBX (Private Branch Exchange) to an Internet Telephony Service Provider (ITSP).

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