It appears thet if you block ANI in CUCM (8.0 and above) it has to analyze every single call thenblocks it if it finds a match. Howvwer, if you look in the replies, many people are having a problem with Unknown callers. I cannot implement this in Call Manager if I am going to experience any call blocks other than the ANI I have specified.
Can someone advise if they are successfully blocking the calling party number in a production environment?
Here is a link to a non-MGCP gatweway block but this is not relevant as I have MGCP gateways in my production environment
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