Professional ISDN-PBX-system with 1 S0 (switchable as external S0 (BRI) or internal S0) and 8 analogue extensions with caller ID (FXS). Meets all requirements of professional use in offices as ACD group function, Least Cost Routing and a lot of other functions. The PBX are integrated in already existing network and can completely be configured via any common web browser. No installation of drivers or software is needed. That's why tiptel systems are the optimum solution for Apple, Windows, or Linux users. TAPI driver for 3rdparty CTI (Windows) are available, so that dialling from databases as Outlook are supported. Plug in extension modules available for answering-machines and call-management (VCM-module), 2 external analogue lines (2FXO-module) and VoIP external and internal (VoIP-CP module 4/8 or 8/16).