The innovaphone PBX provides a modular system comprising hardware, licenses, interfaces and software, in order to solve complex topics in corporate communication. The innovaphone solution thus integrates perfectly into heterogeneous company structures. In any case step-by-step implementation and expansion at a later date is guaranteed on this basis. The VoIP gateway is the core product of the innovaphone PBX. On the one hand it provides the hardware base for the PBX software, whilst at the same time providing the interface to the traditional telephone network. The wide array of gateways enables application in a number of scenarios and scalability enables an almost unlimited number of registered subscribers.