Hi, There are (minimum) two things you need to get from ASCOM reseller in order to IP-DECT integrated w. CUCM:1. License option for ASCOM IP-DECT Base Station (named: Cisco UCM Extended SIP Line Support),2. 'Ascom IP-DECT Device' COP file for CUCM.  ...

Hi Not sure whether CIPC 8.6.6 is officially supported by CISCO... but I can assure it works with CUCM 12.5, Windows10x64 and Win11x64. In my case missing Microsoft Visual C++ library was causing CIPC 8.6.6 crash at launch on fresh installed lab's VM...