AT&T AT3111-2 - Manual (Page 19)

Telephone operation
15
Options while on calls
Volume
During a call, Press
VOL or VOL on the right on the right
side of the handset to adjust the listening volume
to a comfortable level.
Call waiting
If you subscribe to call waiting service, you will
hear a tone if there is an incoming call while you
are already on a telephone conversation.
• Press
/FLASH on the handset to answer
the new incoming call and put the current call
on hold.
• Press /FLASH at anytime to alternate
between calls.
Multiple handset use
While on a call with one handset, any other
available handsets can join the call.
• Press
/FLASH or on another handset to
join the conversation.
• Press OFF/
CLEAR
, place the handset in the
telephone base or charger to drop out of the
call. The external call will not be terminated
until both handsets hang up.
NOTE: A maximum of two handsets can be used at once
on an outside call.