The new versions ship with TAPI drivers. CAPI cannot be used for voice telephony. Make sure you buy an ISDN board that comes with a TAPI, WAVE and NDIW-WAN driver. B5 Videotelefon-ISDN Karte MegaSoft develops a TAPI and WAVE driver for ISDN boards. TAPI 2 drivers for 3rd party call control.
Some drivers are available to beta customers only.
If there is no telephony TAPI driver available for your hardware, contact your vendor. The more people ask for drivers, the faster they are developed. MegaSoft develops drivers for hardware vendors.