ZETRON 280, Руководство по эксплуатации продукта

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Figure 18: Selecting Function Tones for Key #1
Once the necessary control tones have been selected, the program will return to the
original key assignment screen. Use the arrow keys to move down the list and select key
#7, then press ENTER. Use the arrow keys to select the Mute function.
The next widow to open asks you to adjust the level of muting when this function is in use.
This number indicates what percentage of normal volume will be present when the Mute
function is being used. The default value is 0%, that is, no audio is output. The level can
be increased to 45% of normal volume, and then the setting wraps around back to 0%. Use
the left/right arrow keys to adjust this setting and note that the level changes in 5%
increments. Set this level to 25%, then press ENTER.
Use the arrow keys to select key #8 and press ENTER. Use the arrow keys in the function
select window to set key #8 as the Intercom control. Like key #1, the program will ask you
to select on/off control tones for the Intercom function. This tone should be chosen from
frequencies not recognized by the repeater termination panel, so that only the tone remote
desksets in the system respond to them. For this example, just press ENTER to accept the
default values offered.
This completes the key assignments for the example. The Key summary menu item can be
used to check your work, as shown in
Figure 19 .