SIP Route patterns in CUCM allows the system to route SIP URIs to a predefined destination.. Mostly toward to the Collaboration Edge environment. To cover all possible URI formats use the below configuration.

Note: CUCM doesn’t allow to cover the entire IPv4 Range in one expression. The work around is to split into two expressions as per image below. (1.0.0.0/1 & 128.0.0.0/1)