User Guide for the SIP-T40P IP Phone344. Press the Save soft key to accept the change.Phone lock is configurable via web user interface at the path Features->Phone Lock.Audio SettingsVolumeYou can press the Volume key to adjust the ringer volume when the phone is idle or ringing.You can also press the Volume key to adjust the receiver volume of currently engaged audiodevices (handset, speakerphone or headset) when the phone is in use.To adjust the ringer volume when the phone is idle:1. Press to adjust the ringer volume.To adjust the ringer volume when the phone is ringing:1. Press to adjust the ringer volume.You can also press to adjust the ringer volume when selecting a ring tone. For moreinformation, refer to Ring Tones on page 35.Note If ringer volume is adjusted to minimum, the icon will appear on the LCD screen.