Not officially supported, but since it is a SIP GW, I don't see why it would not work with CUCM via a SIP trunk (assuming there is a way to configure the SIP settings on the device itselt).
Only way to get FXO lines with CUCM is to use voice gateway with FXO trunks, for FXS you can use ATA, VG202, 204, 224, 350 or FXS cards on router.
Chris
