Gamma SIP Trunks

 

Reliable voice services with flexibility and continuity

​

SIP trunking is rapidly replacing ISDN services for inbound and outbound voice calls. Gamma is the UK’s leading SIP trunks provider. Our SIP trunks connect your site’s PBX directly into the Gamma network via an internet connection to carry and terminate your calls across the public telephone network.

 

With BT due to turn off ISDN in 2025, there’s never been a better time to discover how switching to Gamma SIP Trunking can benefit your business.

 

Gamma SIP Trunks provide a highly-flexible alternative to ISDN and are compatible with all the leading IP PBX brands in the UK market, giving you peace of mind that your PBX hardware works with the network service.

 

Compared to ISDN, Gamma SIP Trunks are cheaper on a perchannel basis and more flexible in terms of what telephone numbers you can have and the locations in which you can have them. In addition, they are quicker to install and offer a robust business continuity service that ensures your business never loses any calls.

 

Any business with a PBX can switch to our SIP trunking service and immediately benefit from a more flexible, less expensive and more resilient phone service.