NEC Univerge DT310 User Manual page 12

1.
(10) Up/Down
( UP
DOWN )
Used to adjust speaker/receiver volume, and
ringer volume.
• Speaker/Receiver Volume:
Press ( ) or ( ) key during conversation.
• Ringer Volume:
Press ( ) or ( ) key during ringing.
(11) Directory
Press key to activate speed calling - system
feature (PROGRAMMABLE).
(12) Speaker
Controls the built-in speaker which can be used for
Hands Free dialing/monitoring.LED on key lights
when key is active.
DT310 supports half duplex handsfree. DT330
supports half/full duplex handsfree.
(13) Transfer
Allows the station user to transfer established calls
to another station, without attendant assistance.
(14) Hold
Press this key to place an internal or external call
on hold.
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