SMT-i6020/6021 User Guide _31Functions Available during CallThe functions below are convenient to use while making a call via an extension oroutbound line.Call ParkA call can be held temporarily to make the caller wait, and then the conversation canbe continued when convenient.Operation may vary depending on you system. For more information, contactyou system manger.1 To hold the current call, press the [Hold] buttonduring call.2 The ‘Hold’ message is displayed.- If Speaker mode, waiting screen is displayed.- The call can be resumed by pressing the [Program key] [Resume] soft buttonagain.MuteThis function is used to silence the user’s voice during a call via an extension line, butthe user can still hear the voice of the other party.1 To block your voice during call, press the [Mute]button.- Now the counterpart cannot hear your voice.- The LED of [Mute] button is turned on.2 When you press the [Mute] button again, thefunction is cleared.