AT&T DL72219 - Options While on Calls; Handset Speakerphone; Volume Control; Mute

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Telephone operation
Options while on calls
Handset speakerphone
During a call, press /SPEAKER to switch between the speakerphone and
normal handset use.
Press OFF/CANCEL, or return the handset to the telephone base or charger to
hang up.
Volume control
While on a call or message playback, you can adjust the listening volume on the
handset or telephone base.
If it is a cell call and the volume is too loud, too quiet or drops out, try changing
the volume on your cell phone. On some cell phones, changing the volume on
thecellphoneaectsyourcellcallvolumeontheDL72119/DL72219/DL72319/
DL72419/DL72519 handsets.
To adjust the listening volume of a handset:
f Press /VOLUME/ on the handset while on a call.
To adjust the listening volume of the telephone base:
f Press VOL or VOL while listening to the message playback on the
telephone base.
Mute
Usethemutefunctiontoturnothemicrophone.Youcanhearthecaller,but
the caller cannot hear you.
To mute a call:
f While on a call, press MUTE/DELETE on the handset. The handset displays
Muteduntilthemutefunctionisturnedo.
To end mute a call:
f Press MUTE/DELETE on the handset again and resume speaking. The handset
brieydisplaysMicrophone on.
Mute is automatically canceled when you end the call.