We require some inbound calls to be transferred to a third party but are having trouble doing so. An agent takes an inbound call, speaks to the customer and decides they need to transfer them. They hit transfer and dial the 3rd party number, and are put on hold. They now require the ability to go back to the original inbound caller, tell them they are on hold and then transfer the call, but when they then go to transfer the call it opens a new line. Any ideas?