I have the following question for which I could not find a clear answer seaching the internet.
We use: Cisco Unified CM Administration
System version: 6.1.4.1000-10
We have a ISDN number block of a hundred numbers (488) 5000 - 5099, my number for instance is (020) 4885033
Now the way it works with external call id, is when you dial outside the main office number is displayed which is 5000. Now what I want is to change this for a single (or a couple of) user(s). I want his external caller id to be his actual extension number which is 4885001. I've tried from the Directory Number Configuration,
Check the calling party settings in the route pattern, route list and gateway. A good way to figure out quickly where the calling number is being changed is to use the DNA.