I'm trying to apply a single step transfer to a call and I'm experiencing non deterministic results while several internal terminals involved.
I'm simply invoke the "transfer" method on a call and I'm getting randomly different behavior when another internal address involved. When two external addresses involved it work every time.
As I'm triggering the transfer method of a call and the only parameter is destination address, I don't get what I'm missing here.
Note : The other internal address is a real externally accessible address in international number format.
Is there any other way to trigger single step transfer or choose to appropriate surviving source address ?
Thank for your support !
PS: I'm using CUCM v12.5