Basic Call Features107Placing a Call Back to the Last Incoming CallYou can configure a Recall key to place a call back to the last incoming call quickly.Procedure:1. Navigate to Menu->Features->DSS Keys.2. Select a desired line key.3. Select Key Event from the Type field.4. Select ReCall from the Key Type field.5. (Optional.) Enter the string that will display on the LCD screen in the Label field.6. (Optional.) For the SIP-T52S IP phone, enter the string that will appear on the LCD screen inthe Short Label field.7. Press Save.Recall key is configurable via web user interface at the path Dsskey->Line key.Dialing the Hotline NumberYou can configure the hot line feature with a hotline number and hotline delay. Then the IPphone will dial out the hotline number automatically after the delay time when you lift thehandset, press the Speakerphone key or the line key.Procedure:1. Navigate to Menu->Features->Others->Hot Line.2. Enter the desired number in the Hotline Number field.