Creating a loopback interface and bind CUCM to Call Control Protocols

Below configuration will create a loopback interface and bind Cisco CME to Call Control Protocols :

interface loopback 0
ip address 192.168.251.1 255.255.255.255
h323-gateway voip interface
h323-gateway voip bind srcaddr 192.168.251.1
voice service voip
sip
bind control source-interface loop 0