At one installation that i have done, they want to do the following: when they transfer a call to another extension (using ##) and the destination extension is busy, the call to be returned to the original extension. Example: extension 1001 transfers an incoming call to the extension 1002. The extension 1002 is busy. The call must be returned to the extension 1001 to inform the caller that the destination extension is busy. This feature is standard at commonc PBX's and i really miss it on Elastix. Is there any solution for that?