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.
*)- COP file version 10.5v1 is incompatible with CUCM version 12.0 and above
BR
D