![]() SIP calling removes the need for PRI lines. ![]() PSTN (Public Switched Telephone Network): the network that routes calls to their destination.PRI (Primary Rate Interface) lines: lines that connect calls to the PSTN.PBX (Private Branch Exchange): your on-premises system that manages your calls.How Does a SIP Call Work?Ī traditional phone system consists of these three parts: The easiest way to know what this means is to visualize it. However, SIP calling actually uses VoIP to move your analog call traffic over an internet connection. ![]() SIP calling, or Session Initiation Protocol calling, the process of transmitting voice calls over a SIP trunk or a SIP channel. It’s often interchanged with VoIP calls. In this guide, we’re breaking down how SIP works and how you can make the most of it. SIP calling will transform the quality of your business phone system while bringing the cost of it down. You can run your voice calls, video calls, and instant messaging through an internet-based VoIP phone service provider. If you’re dealing with inefficient phone systems or high expenses (or both), you’ll want to consider SIP trunk provider. If the systems that support your business communication aren’t reliable or up-to-date, you’ll struggle. And not just with your customers, but also prospects, partners, vendors, and coworkers. Here’s a wild guess: the success of your company depends on how well you can communicate. With SIP, Voice over Internet Protocol is possible. With Session Initiation Protocol (SIP), you can move your existing PBX phone system to the cloud.
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