2N Door intercom 2N Helios - Manual, 1322 v3.0 - Manual (Page 50)

Full Parameter Chart 3.2
50
Explanation of Parameters 942, 943, 944
Busy tone
Example:
The busy tone in the figure above is considerably longer than the pause time.
Therefore, set parameter 942 according to the pause, to 200 ms, e.g., and parameter
943 according to the tone, to 600 ms, for example. In this case, however, the default
values can be maintained for both the parameters. Since the tone – pause difference
is 500 – 250 = 250 ms, set parameter 944 to 300 ms, for example.
Note
 Increase parameter 944 also when 2N® Helios is placed in a hall or
corridor with a large decay time.
tone time
pause
time
par.
942 par. 943