About the Feature Key Expansion Unit (EU24)
The Feature Key Expansion Unit is an optional device that can be connected to your 4620SW IP Telephone. The EU24 contains 24 buttons onto which additional IP Telephone features and/or call appearances (incoming/outgoing lines) can be administered by your System Administrator.
For information about this Avaya product, see our Web site at: http://www.avaya.com/direct. For usage instructions, see the "Feature Key Expansion Unit User Guide" (Document Number
Navigating Application Screens
Your 4620SW IP Telephone uses a combination of Phone Feature buttons, Line/Feature buttons, and Softkeys to allow you maximum flexibility in operating the phone and working with its applications.
Phone Feature buttons are used in the Phone application and appear on the face of the telephone around the dialpad. Phone buttons have an icon on the top of the button, to indicate the button's function. These buttons provide mostly
() - used to exit call
The Page Right and Page Left buttons () between the Phone/Exit and Options buttons) are also considered phone buttons, and are used to move forward (Right Arrow) or backward (Left Arrow) from one display screen to another. These paging buttons work in conjunction with the paging indicators () you may see on an application screen. Paging indicators show that a screen has more than one page, and allow you to navigate forward and back through those additional pages.
To activate the function or feature represented by a phone button, simply press the appropriate button.
Line/Feature buttons () appear on both sides of the display area. These buttons provide call appearances (Lines) and other
An example of the difference between a Line/Feature button's functionality in the Phone application versus other applications is as follows: if you are in the Phone application (the default display screen) and want to call someone, you press the first Line/Feature (call appearance) button and dial your party. But if you are in the Call Log application, pressing the first Line/Feature button selects (highlights) the first call log entry and displays detail information about that call.
In addition to the
| Icon | Description/Condition | Feature Button Display | |
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| None | Feature is on/active. | White | |
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| None | Feature is off/inactive. | Light Gray | |
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| None | Feature denied (Broken Flutter). This is a temporary condition, accompanied by an "error | Light Gray | |
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| beep" the first time it occurs. This condition then changes to the off/inactive state. |
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| None | Idle; indicates a (call appearance) line is available. | White | |
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4620SW IP Telephone End User Guide 6 P a g e