Be future-ready with SIP Trunking from the UK’s leading provider, supported by award-winning SynergyGroup.

What is SIP Trunking?

SIP trunking is a type of technology that lets you make calls over a data connection. With SIP trunking all you need is an Internet connection and a phone system.

With Openreach announcing the “death of ISDN” in 2025, SIP trunks are the perfect option to replace your ISDN, whilst still being able to sweat the investment you have already made in your PBX.

Contact SynergyGroup today to discuss the many different advantages of moving to SIP Trunking, and how we can help support your business – 0800 915 6666.