IVR-OTS-1 Manual
6
6. On/Off
7. Communication Distance
Press the On/Off button so the device start
working. The power indication light is will turn on.
Press this button again and the telephone will shut
down.
Do not wear headsets before booting to avoid ear
damage caused by loud volume. The correct way is
turning down the volume after booting, then wear
the headset. After wearing the headset, adjust the
volume to clarity and without distortion.
According to the communication and line loss be-
tween two telephones, you must choose the appro-
priate communication distance. The optical fiber
telephone has two modes, remote communication
and near field communication. When the line loss is
more than 20 dB, you must use remote mode. The
maximum communication range of remote mode is
120 km. When one side is using optical fiber holder,
you must use remote mode too. The maximum com-
munication range is 60 km. When the line loss is less
than 20 dB, you must turn off remote mode, or will
cause howling and lead to no communication. The
maximum NFC distance is 60 km.
By pressing the Long button you can switch
between remote communication mode and near
field communication mode.
