We have never owned a CISCO CUCM box, or had a remote access to one. We certainly have never seen Skinny protocol spec. Does it even exist? Still, due to unique capabilities of PacketCraft we were able to build a Skinny (SCCP) simulator for a MNO customer. The simulator makes programmable bulk Skinny-to-Skinny and Skinny-to-SIP calls. If you need one, please let us know.