500 Ltd are a Telecommunications Software Development Group that offer a range of services to the IT and Telecommunications market place. Our Development Team has developed, built and implemented large scale hosted PBX platforms for UK Telcos and Contact Centre providers that require highly bespoke platforms catering to their unique needs. Our experience runs from the core software design and hardware build through to end user applications on Windows, iOS and Android. 500 Ltd also built the "SIP Trunk Plus" SIP applications platform, which stands at the forefront of the telecommunications infrastructure provision - and "1st Call Record", which records mobile and landline calls and stores recordings within Box™. The UK IT and Comms Channel can now provide their business and their clients with the cutting edge of connectivity, specialist telephony applications and perhaps most importantly, Fraud Protection. We are also proud supporters of the Mark of Excellence for Fraud Protection run by the FCS (Federation of Communication Services). SIP Trunk Plus is one of the first to achieve their Gold Standard.