Uniden DCX300 Series - Manual (Page 16)

Redialing a Number
To redial one of the last five numbers dialed on this handset,
press [ /pause]. This opens the redial list. Use [ ] and
[ ] to find the number you want to dial, and press [ /flash] or
[ ] in standby, or press [Select/menu] during a call.
Muting the Ringer (One Call Only)
While the handset is ringing, press [ /mute] or [ ] to mute the
ringer for this call. The phone will ring again on the next call. (The
handset must be off the cradle to mute the ringer.)
Muting the Microphone
To mute the microphone so the caller can't hear you, press
[ /mute] during a call. MUTE ON and appear in the display.
Press [ /mute] again to cancel muting.
Privacy Mode
To prevent other stations from interrupting a call, press
[Select/menu] during a call. Move the cursor to CALL PRIVACY,
and then press [Select/menu]. PRIVACY MODE ON and
appear in the display. Repeat the procedure to turn off privacy
mode.
Adjusting the Audio Tone
If you aren't satisfied with your phone's audio quality, you can
adjust the Audio Tone of the earpiece. While on a call, press
[Select/menu]. Move the cursor to select AUDIO TONE, and
then press [Select/menu]. Move the cursor to select desired
audio tone options: HIGH TONE, NATURAL TONE, or LOW
TONE. (The default setting, Natural Tone, is recommended for
hearing aid users.) Press [Select/menu] to confirm. After two
seconds, the displayed audio tone is set, and the display returns
to normal. Audio tone adjustments only apply to the earpiece,
not the speakerphone.