MM480i IP Phone User Guide for SPNAastra - 2756-002 71Option DescriptionSpeaker/Headset Incoming calls go directory to the speaker.Use the Speaker key to switch between the speaker, headset,and handset.Lift the handset at anytime to switch back to the handset fromeither the speaker or the headset.Headset/Speaker Incoming calls go directly to the headset.Use the Speaker key to switch between the speaker, headset,and handset.Lift the handset at anytime to switch back to the handset fromeither the headset or the speaker.Set the Audio Option and Headset VolumeStep Action Result1. Go to the Set Audio option.2. Press Show or . The Audio Mode screen displays.3. Press the Change softkey to choose theaudio mode.4. Press Done.Headset Mic VolumeStep Action Result1. Go to the Set Audio option.2. Press Show or . The Audio Mode screen displays.3. Press the Advanced softkey. The Headset Mic Volume screendisplays.Headset Mic VolumeLowMediumHigh-ChangeCancel-Done-