Hello,Scheme:Cisco SCCP-based IP Phone > CUCM 9.1 w/ SIP Trunk > CUBE (28XX, 151-4.M7) > SIP ITSPCUCM Active Call Proc. Node IP: 10.10.10.9CUBE Inside Interface IP: 10.10.10.10CUBE Outside Interface IP: 20.20.20.20Cisco IP Phone: 10.10.10.8ITSP SBC I...