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23MD Evolution – Cordless DT590
DT590 General Description
1Volume Up
This button is used for increasing the ear piece volume and the
loudspeaker volume in handsfree mode. See section “Adjust ear
piece volume” on page 122 and section “Adjust loudspeaker
volume for handsfree speaking” on page 122.
2Volume Down
This button is used for decreasing the ear piece volume and the
loudspeaker volume in handsfree mode. See section “Adjust ear
piece volume” on page 122 and section “Adjust loudspeaker
volume for handsfree speaking” on page 122.
3 Loudspeaker
The loudspeaker is placed on the rear side of the handset. See
section “Adjust loudspeaker volume for handsfree speaking” on
page 122.
4 Off hook / Yes
This button is used for connecting calls, pressing briefly once in
standby mode will open the call list. Always press this button to
confirm choices when working in menu mode.
5 C (Clear) / Mute
Pressing this button in standby mode will mute the ringer signal,
pressing it during a call will mute the microphone.
6 Microphone
Note that the microphone is placed on the bottom side of the
handset, close to the charging connectors. (The three small holes
to the left of the message key is a matter of design and has no
functionality.)
7 Charger connectors
See section “Installation” on page 141.
8 R / Message key
With this key you put a call on hold (inquiry) and retake a call put on
hold. Pressing this key in standby mode will result in an outgoing
call to a specific extension number. If the “voice message” icon
appears, you can enter your mailbox system to retrieve the voice
message.
9 Handsfree key
Press the handsfree key to turn on the loudspeaker. See sections
“Incoming Calls” on page 37, “Outgoing Calls” on page 41 and
“During Calls” on page 50.