Palm AT&T Treo 680 Starting Manual page 17

Did You Know?
If the touchscreen
dims during a call,
press any key
except Send or
Power/End to
restore the
touchscreen
brightness.
14
0
Puts a call on hold. To take the call off hold, select this
button again.
Lets you make another call while the first call is on hold.
Opens the Dial Pad so you can dial additional numbers, for
example, another phone number or an extension.
Dials any extra digits, such as phone-tree selections, if you
assigned these to a speed-dial favorite button. See the User
Guide for more information on assigning extra digits to a
speed-dial favorite button.
Mutes the microphone so that you can't be heard on the
other end. When you want to speak, select this button again.
Treo 680