When you call a busy extension, you can leave a Callback request fora return call. You do not have to repeatedly call the busy extensionback, hoping to find it idle. When you leave a Callback, the systemhandles your request as follows: When the busy extension becomes idle, the system rings you. After you answer the Callback ring, the system then rings the for-merly busy extension. (If that extension doesn't answer, the systemcancels the Callback.) As soon as the other extension answers, the system sets up anIntercom call between you and them.If your phone has Automatic Callback, you answer the Callback ringas soon as you lift the handset. If your phone doesn't have AutomaticCallback, you must press the ringing line appearance key to answerthe Callback ring.1. Call a busy extension.2. or (Callback).3. Hang up.4. when busy extension calls youback.If you don't have Automatic Callback,you'll have to press the ringing LineAppearance key.1. + .OR(Callback).To cancel a Callback:To place a Callback:27Callback