User Guide for the SIP-T23P/G IP Phone44To 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. Press Menu->Settings->Basic Settings->Sound->Ring Tones->Common.2. Press or to select the desired ring tone.3. Press the Save soft key to accept the change or the Back soft key to cancel.A ring tone for the phone is configurable via web user interface at the pathSettings->Preference->Ring Type.To select a ring tone for the account via phone user interface:1. Press Menu->Settings->Basic Settings->Sound->Ring Tones.2. Press or to select the desired account and then press the Enter soft key.3. Press or to select the desired ring tone.