I have the following conditions.
I need to achieve the following .
You can create Route Group say RG_SIP in which you put the SIP Trunk to PBX, Create another Route Group with Two local MGCP GW. Create Route List and Put RG_SIP and MGCP Route Group. Use this in Route Patterns
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Make sure you use OOB options 'ping' on your sip trunk in cucm, so that if it goes out of service, it can successfully fail over to your mgcp gateway