You do not have any PBX and would like to install TAPIMaster ® nevertheless, however, on a trial basis? No problem. The Demo TAPI-Treiber emulates a PBX. Please copy the TMDEMO.TSP file into the SYSTEM 32 directory of the server computer. Open the "Phone and Modem Options" control panel, page "Advanced". Add the "TAPIMaster® Demo Telephony Service Provider". Now you can use the virtual PBX. This PBX supports various features for internal calls. More TAPI Tools you can find at the TAPIMaster® website.