Customizing Your Phone
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DSS Keys
There are three types of DSS keys: Line Keys, Programmable Keys and Ext Keys. Ext Keys are only
available when the EXP50 is connected to IP phone. For more information on how to configure
the Ext Keys, refer to Assigning the Features for Ext Keys. Details are introduced in the following:
Line Keys
You can assign predefined functionalities to line keys as well as define a label for a line key. Line
keys allow you to quickly access features, such as recall and voice call, and monitor a specific line
when the line keys are assigned with particular features, such as BLF. The default line key type is
Line or N/A (meaning that this line key provides no functionality until being configured). The
line keys can be indicated on three pages.
Details are introduced in the following:
The following figure shows an example on the SIP-T54S IP phone when assigning functionality
to line keys located in line key 1-10, the labels of line keys are indicated on the first page.
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