Asterisk VoIP Weird Problem

“whenever I try and make a call via my softphone I get a busy response in the CLI the call does not even start, just cuts in an instant,”

Command line interface (CLI) is for displaying messages as; info, warning, etc.

“what is weird here is the instant cut, I mean the second you click the call button it cuts and gets a busy message on my CLI.”

What it mean exactly with “busy message on my CLI”??