Although SwyxServer performs an important central function, this does not also mean a "central bottleneck". In contrast to conventional telephone systems and IP telephone systems with a central switching unit, SwyxServer is only minimally involved in setting up and controlling the call: SwyxServer essentially takes on elementary functions relating to a connection setup - such as determining the associated IP address for a number to be called - and establishes its availability, while the actual call with SwyxWare then takes place directly between the participating terminal devices, with no involvement of SwyxServer in the actual media stream (the transmitted speech). It is therefore easily reconstructed, so that SwyxServer satisfies even medium-sized firms and can initiate and control hundreds of calls in parallel without causing internal "busy" situations.

Due to the fact that not only connection control data but also voice, fax, or video data are transported as IP packets, SwyxWare retains complete control at all times over all existing connections. This allows SwyxWare to easily create, play, or record voice information, for example, during connection control and depending on the current data structures. In this way it can function as an automatic announcement system, as an answering machine, as Voicemail, or play any music on hold with no additional hardware required.