I have elastix PBX, and when I transfer a call to other extension, I got "Redirect Success" even if the extension I transferred the call to not answered or busy.
The case Is:
A is on call with B. B transferred the call to C. B got "Redirect Success" even if C is not answered the call, or C is busy. And the call is disconnected from B.
What I need is: B still connected with A unless C answered the call.