What do you see in DNA? Your writing that you see it fail by this “i am able to see in records that the call is fail due to this cause”. What is that cause?
What about my first part of the reply to you? “What do you see in DNA?” Does DNA show that the call should succeed based on the configuration of the device where this users calls from?
You need the CallManager logs, also known as SDL. If you’re not completely new to the Collaboration area you should know how to collect logs via RTMT as that’s a very common thing to do. Especially if you ever have worked with TAC as they almost always request to get some kind of logs. If you don’t know then I would suggest that you search for it on Google, or whatever search engine you might prefer. I’m sure that with a minimum amount of effort on your end you’ll be able to find ample options that describes how to do this.
As stated it’s the CallManager logs that you’d need. But if you’re new to this it’s not going to be an easy task to read the SDL traces. Their not written in an super easy way to read.
