How SIP Trunking Works
In an IP and traditional telephony network, for a voice call to take place, it is expected that the two telephones go through two different phases known as call setup and call processing. The call setup – the first phase – happens when the two telephones want to talk to each other. This phase takes charge of exchanging all the information needed to get these two phones through and can start the call. When the call has been setup, the call processing phase will begin to transfer voice data back and forth between the two phones. In call setup phase, SIP (Session Initiation Protocol) which has taken the VOIP world by storm and gradually replaced the well-known H323 is widely used. Read More >>>

This is a diagram reviews how SIP Trunking actually works. On the left hand side is the Public Switched phone network. When you go along the communications line over to the center of the diagram, you’ll see the Internet Service Telephony Provider; this is the exact area where the SIP Trunking connection takes place. Here is where the calls are going to be routed to toward the corresponding PBX. When the telephone calls reach the PBX, the PBX system will reroute the calls via the PSTN and connect to your remote workforce (if applicable).

how sip trunking works

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Choosing a SIP Trunking Provider
When it comes to choosing the right SIP Trunking Provider to enable and take control of your external voice capabilities, you’ll find a large selection of service providers that are available to choose from.

SIP Trunking provides one of the best network-environments suited to the next gen unified communications and various collaborations. From Video and Audio Conferencing to Voicemail and Email, SIP Trunking is the perfect solution.

At you’ll learn all about the key attributes to consider when making a provider selection and also to get the most out of your investment. Read More >>>

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