IT-100 v1.2 8
PARAMETER 8: Hang-up tone detection time.
Depending on the type of exchange or the quality of the telephone line, the module could mistake a tone
of voice for the hang-up tone. If this occurs, increase this parameter so that a longer detection time is
programmed.
Values of 0 to 9 are admitted, increasing the hang-up tone detection time by 25 ms with each value (0 =
disabled, 1 = 25 ms … 9 = 225 ms).
PARAMETER 9: NOISE GATE
Through this parameter, the noise gate available on this telephone interface can be activated (dial 1) or
deactivated (dial 0).
PARAMETER 10: COMMUNICATION TIME
This determines the maximum communication time. Once this time has elapsed, the module will hang up
automatically.
MAXIMUM COMMUNICATION TIME
5.2. FACTORY DEFAULT SETTINGS
The module is factory configured as follows:
Detection of
hang-up
tone
ATTENTION: By assigning a 0 to this parameter, the automatic hang-up function is deactivated; in
this case, if the telephone hangs up and the communication time (parameter 10) has not ended, the
hang-up tone will be heard over the Public Address system until this time has elapsed.
To avoid this, the system includes the function of forcing hang-up by pressing key 1. When 1
is pressed, independently of the values assigned to parameter 8 (hang-up tone detection time) and to
parameter 10 (communication time), the telephone hangs up.