Hi all. I have an issue where a customer has several PRIs and when a internal caller calls out, they get a different caller ID mask, according to which PRI they hit. I have it set on the route pattern (in callmanager 6.x) to use a particular number when it hits that particular route pattern. But, it doesnt seem to work and I always get the same results no matter what. The same 4 numbers come up every time, depending on which of the 4 PRIs you hit. I have tried to call the carrier and they tell me they are not doing call masking at all. But I think they are because I have never seen the numbers that show up. So, I know I didnt program it in. How can I do a test to prove this to the carrier that they are the problem?