38Call functionsUsing the headsetUse the headset to make or answer calls withoutholding the phone.Connect the headset to the jack on the left side of thephone.The buttons on the headset work as listed below:Options during a callYou can access a number of functions during a call.Adjusting the volume during a callUse [Up/Down] to adjust the earpiece volume during acall.Press [Up] to increase the volume level and [Down] todecrease the volume level.Placing a call on hold/RetrievingPress <Hold> or <Unhold> to place the call on holdor retrieve the call.Using the menu functionsPress <Options> and select Menu.Switching off the microphone (Mute mode)You can temporarily switch off your phone’smicrophone so that the other person on the phonecannot hear you.Press <Options> and select Mute or Unmute.Muting or sending key tonesYou can turn the key tones off or on.Press <Options> and select Mute keys or Sendkeys.To Pressredial the last call the button twice.answer a call and hold the button.end a call and hold the button.To communicate with answering machines orcomputerised telephone systems, Send keys mustbe selected.