Making Calls36N When the handset is not in use, you can also turn this feature on or off byperforming the following steps:1. Press [MENU] while the handset is not in use.2. Scroll to “Voice enhancer” by pressing [d] or [B], then press the soft key( ).3. Select “On” or “Off” by pressing [d] or [B].4. Press the soft key ( ), then press [OFF].Using the Base Unit• To switch to the handset while using the base unit speakerphone:— If the handset is off the base unit, press the line soft key ( ) or ( ) onthe handset, then press [SP-PHONE] on the base unit.— If the handset is on the base unit, just lift up.• The line buttons show the status of each line (p. 37).To adjust the speaker volume during a conversationTo increase volume, press [B]. To decrease volume, press [d].• There are 8 volume levels. If you try to increase/decrease volume when it is at themaximum/minimum level, the base unit beeps 3 times. The level is displayed onthe base unit.1 Press [SP-PHONE].• The SP-PHONE indicator lights.• A free line is automatically selectedand the line button lights. (To changethe line selection, see page 63.)• You can select a line by pressing aline button that does not light, insteadof pressing [SP-PHONE].2 Dial a phone number.• If you misdial, press [SP-PHONE]and start again from step 1.3 When the other party answers, talkinto the MIC (microphone).4 To hang up, press [SP-PHONE].• The SP-PHONE indicator and linebutton lights go out.Hands-free Digital Duplex SpeakerphoneFor best performance, please note the following:• Talk alternately with the other party in a quiet room.• If you or the other party has difficulty hearing, press [d] to decrease thespeaker volume.SELECTS AV EBase Unit[REDIAL/PAUSE]LINE Buttons[B], [d][HOLD]MIC[SP-PHONE] and IndicatorL I N E 1 L I N E 2