Using SIP Trunks allows you to reduce the cost of your telephone calls and get added Business Continuity/Disaster Recovery benefits too. SIP trunks are the modern alternative to the aging UK ISDN network. SIP calls are either delivered to the Cloud solution and calls routed to site, or routed directly to the on-premise solution, both utilising an internet connection. SIP, when compared to ISDN, delivers enhanced failover options, the ability to increase or decrease capacity easily and from a marketing prospective, acquiring telephone numbers, or business’s, allows for easier integration into your network. SIP call rates are cheaper than those on ISDN and you can get bundled minutes too.