Read your manual, Panasonic KX T7750 Quick Reference Manual
Conflicting Extensions
Add-ons, also called plug-ins or extensions, are mini-applications that attach themselves to independent software and add extra capabilities to the program.
Extensions can change a browser's interface, alter the behavior of existing operations, add new functions or install in-browser support for programs like Shockwave Flash or Adobe Reader.
Because these extensions make changes to the overall operation of a browser, they can also affect the shortcut keys.
Most browsers offer an option to run the application with add-ons disabled; if the shortcut keys work when extensions are turned off, one of the add-ons is at fault.
Key Reassignments
Programs like MapKeyboard, SharpKeys and KeyTweak can reassign the functions of each key on the laptop keyboard.
If the computer is running a non standard keyboard layout, certain keys might not behave or respond normally.
For example, if the "Ctrl" key has been disabled or is set to work like "Shift," shortcut keys won't work as expected because the keyboard is no longer using its default mapping.
If the keyboard layout has been changed in the Dell laptop, the registry will contain a Scancode Map entry in
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout or the language bar will show a keyboard language different from the default ("English (United States)," or "EN," for Dell laptops purchased in the U.S.).
Virus Infection
Malicious software can affect the function of peripheral components like the keyboard and mouse.
If the keyboard is exhibiting strange behavior for example, if certain keys do not respond or if keys output unexpected letters a virus is most likely the cause.
Running an anti malware software from within Safe Mode accessed by pressing "F8" on the Dell logo screen should remove any viruses interfering with keyboard response.
Browser Software
Upgrading or downgrading a browser on the PC can affect the Internet shortcut keys associated with that program, especially if the version removes a function that was once associated with a particular keyboard combination.
Alternatively, if you've switched to another browser, you might find that certain shortcuts that worked in the previous browser don't work in the new one.
For example, while "Shift-F10" opens a context menu in Internet Explorer, the same keyboard combination does nothing in Mozilla Firefox.
Hope this helps.
The green lights next to the line or pool buttons show the current Line Ringing settings for all
lines or pools assigned to the extension. (If a line or pool is not assigned to a button, the green
light next to that button is off.) The following ringing options can be shown by the green light
next to the line or pool button:
? Immediate Ring - on steady
? Delayed Ring - flashes slowly
? No Ring - flutters quickly
3) Press the line or pool button until the button light shows the correct setting (the setting for the
currently selected line or pool also appears on the display).
4) Continue programming, or exit programming mode.
Line selection:
For incoming calls, the line selection (hunt sequence) is set by the local service provider). For outgoing calls....again....it depends on the system. For the Partner ACS:
1) Press FEAURE 00, SYSTEM PROG, SYSTEM PROG, CENTRAL PROG at extension 10 or 11.
2) Enter the number of the extension to be programmed for Automatic Line Selection.
3) Press **.
4) Press the line, pool, or INTERCOM buttons in the desired order. The valid entries for Automatic
Line Selection depend upon the type of extension:
? Key Extension: Outside system lines, Left Intercom (the factory setting)
? Pooled Extension: Pool 880 button 1, button 2, Left Intercom, Right Intercom (the factory
setting), Pools 881-883, individual lines
For each button pressed, a display similar to the following appears:
Automatic Line Selection
5) To exit Automatic Line Selection, press **.
6) Press CENTRAL PROG and enter a new extension number, or exit programming mode.
Changing line ringing and line selection are tasks that are normally reserved for the Administrator of the telephone system.
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