Model 53i IP Phone User Guide 73
Line Keys and Programmable Keys

None Key

You can set a key to force a blank entry on the IP phone display for a specific key.
You do this by setting the key to "none". If a particular key is not defined, it is
ignored.
Setting a None Key
Use the following procedure to configure a None key on the 53i IP Phone.
1. Click on Operation->Programmable Keys.
or
Click on Operation->Expansion Module <N>.
2. Select from "Key 3" through "Key 6".
3. In the "Type" field, select None.
4. Click to save your changes.
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