User Guide for the SIP-T48G IP Phone32To adjust the volume when the phone is idle:1. Press to adjust the ringer volume.NoteTo adjust the volume when the phone is during a call:1. Press to adjust the volume of currently engaged audio device (handset,speakerphone or headset).Ring tones are used to indicate incoming calls. You can select different ring tones todistinguish different accounts registered on your phone, or to distinguish your phonefrom your neighbor’s.To select a ring tone for the phone via phone user interface:1. Tap ->Basic->Sound->Ring Tones.If ringer volume is adjusted to minimum, the icon will appear on the touch screen.