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i2022 ISDN Teleset
The Teleset will light the appropriate Call Appearance keys and display the DN assigned to them. This is helpful when checking Multiple Call Appearances or labeling the Teleset.
PROTECTING KEYS FROM BEING OVERWRITTEN
(This procedure is not necessary On 5ESS Custom ISDN or firmware versions dated K121003 or newer.)
Once the Teleset has been completely programmed, it is possible for the serving switch to change the Teleset’s programming. This feature is called
There are two different methods for protecting the Programmable Hardkeys. The first is to disable the automatic download. The second is to allow the automatic download but protect the keys on a
Disabling the Automatic Download
To prevent the switch from changing any keys by preventing an Automatic Parameter Download, press MENU and then dial 99 on the touchtone keypad.
Press Disable.
Protecting specific keys from an Automatic Download
To prevent the switch from changing any keys on a
Press SelKey. The display prompts you to “Select Keys to Protect”.
Select the Programmable Hardkeys to protect by pressing each of them. When selected, they will light green.
Press Save.
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