SIP trunking

The world of VoIP telecoms can be a confusing one, with lots of different names and acronyms kicking around. Some of these the average user doesn’t need to worry about, but some like SIP trunking are important.

With the switch off of PSTN systems due in a few years https://www.itproportal.com/2015/12/09/how-will-the-pstn-and-isdn-switch-off-impact-on-your-business/, it’s therefore vital to get to grips with what SIP trunking is and the advantages it offers for businesses.

What is it?

SIP stands for Session Initiation Protocol and it’s the technology used to initiate and terminate IP calls. SIP trunking allows IP calls to be made to and from a PBX, and is the replacement for the old ISDN links previously used to link PBXs to the PSTN system.

If you are switching your business phone system to an AZ termination provider such as https://www.idtexpress.com/blog/category/voice-termination/, you will need to look at SIP trunking too. It may be possible to use this with your existing PBX or you may need to swap to a new system, either in-house or hosted in the cloud.

Business advantages

SIP trunking offers many advantages for businesses. There’s considerable flexibility in terms of the amount of traffic you can handle. SIP trunking allows IP calls to be made to and from a PBX, and is the replacement for the old ISDN links previously used to link PBXs to the PSTN system. It’s easy to expand as your business grows or to ramp up capacity to cope with seasonal variations in demand. If you have multiple sites it also offers you the advantage of free calling between them.

Because it uses the latest fast internet connections, call quality on VoIP is now much better than it was in the early days of the technology. Even if your system shares an internet connection with your data traffic, you can use bandwidth management to ensure that voice calls are not compromised.

Modern businesses rely on communication, so in the event of a problem, or even just an office move, it’s essential to have your connections running again fast. This is a big advantage of SIP trunking because you can easily re-route calls to a different destination, at the same time keeping all of your phone numbers the same. This makes it a great solution both for growing companies and for business continuity.

If you are looking to move to a unified communications (UC) strategy, then SIP trunking is a powerful tool to support this as it allows the integration of all your communications devices. SIP trunking allows IP calls to be made to and from a PBX, and is the replacement for the old ISDN links previously used to link PBXs to the PSTN system.

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