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The date and time shown on 4400-Series, MLX, and TransTalk 9040 (when connected to TDL ports) telephones is controlled by the processor module in the control unit. Date and time are sent once every 24 hours. The telephones maintain the date and time until the system sends them again. When the date or time changes, the control unit sends the message to the 4400-Series and MLX telephones one at a time, which can cause a slight difference in the time and/or date displayed on each telephone.
4400-Series and MLX Display Telephones
Four types of screens appear on both the 7-line and the 2-line displays:
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MLX display telephones allow you to change the contrast of the screens. The method varies among the different MLX display telephones. The MLX-20L has a sliding control immediately behind the screen. The MLX 5-D, MLX-10D, MLX-10DP, MLX-16DP, and MLX-28D allow you to adjust the contrast through the Ctrst item in the Menu screen. Select Ctrst and then raise or lower the contrast by selecting Up or Down. |
The display ordinarily shows the Home screen. At other times, MLX telephone users access the Home, Menu, Feature, and Inspect screens by pressing the corresponding fixed Home, Menu, Feature, or Inspect button on MLX telephones. To do the same on 4424LD+, 4424D+, and 4412D+ telephones, users press the Exit, Menu, programmed Feature, or programmed Inspect button.
The 
button
(4424LD+, 4424D+, and 4412D+ telephones) or the More button (MLX telephones)
is used to read screens that include too much information to fit on the display
all at once. The availability of more information is indicated by the appearance
of a > character (MLX telephones) or a right arrow (4400-Series telephones)
on the right side of the screen. This symbol appears on the right side of Line
1 or Line 2. The 4412D+, 4424D+, and 4424LD+ telephones also have a 
button. Pressing this returns you to the previous screen or menu.
When both a right and a left arrow appear on the right side of the 4412D+,
4424D+, or 4424LD+ screen, this indicates that either the
button or the
button can be used to move backward or forward through a series of screens.
When only the right arrow appears, this usually means that there are only two
screens of information, so pressing
or
has the same effect.
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Description | ||||||||
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At a Glance | ||||||||
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Considerations and Constraints | ||||||||
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Feature Interactions | ||||||||