SIP Lines

What are SIP  Trunks

SIP trunking, or Session Initiation Protocol, is the technology that is intended to replace the older legacy technologies of ISDN and PSTN. With BT’s impending switch off of its ISDN lines, there has never been a better time to look at updating your business phone service.SIP trunks offer a more flexible and lower cost alternative to ISDN for inbound and outbound voice calls. A standards-based replacement for traditional ISDN, it connects your PBX to the PSTN via broadband, ethernet or private circuit into our national network.

Compared to ISDN, our SIP trunking service is less costly per channel and more flexible in how and where geographic telephone numbers can be used. It’s also quicker to install and provision and, as standard, it delivers extremely robust business continuity.

The service can support connections ranging from two channels for small PBX-equipped businesses, to an unlimited number of channels for large enterprises and contact centres.

With BT planning to switch off its ISDN and PSTN networks by 2025, businesses across the UK are being urged to make the switch to SIP and IP telephony.

Will it work for my business?

Any business with a  compatible PBX can  switch  to our Sip trunking service and immediately benefit from  more flexible and resilient phone service.

If you don't have a PBX, why not consider our hosted phone system ?