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periodically. The unit can’t log into GSM network. It is either
too low GSM signal or antenna is not connected.
Blue LED (PWR) lights up, yellow LED is flashing up GSM
signal strength. It has been played message „ The unit in stand
by mode“. When button is pressed the red LED (ARM) lights
up, message „Error. No save number from MASTER1.“, no
telephone number is dialled.
There is not saved number under MASTER1 on the SIM card
or it is saved incorrect name (MASTER 1, master1
MASTER1/1 etc.)
Blue LED (PWR) is lighting, yellow LED is flashing up GSM
signal strength, message „The unit in stand by mode“ has
been played, permanently lighting red LED (ARM), after button
press nothing happen.
Incorrectly connected or in short circuit output M in cable
to ReMic (SRGM).
You hear interference in the call.
Power voltage filtration is not enough or it is used AC voltage.
GSM signal break into voice channel (via. Installation). Some
of wire (except power supply) is grounded.
You hear different acoustic shocks and feedbacks in the call
(whistling, ECHO etc.)
Too big amplification in whole system (microphone of called
party phone – speaker in lift cabin – acoustic parameters of lift
cabin – microphone in lift cabin – speaker of called party
phone). Mostly you have to decrease volume of speech. It
helps better muffling of lift (walls covered by carpet). There are
different acoustic parameters of empty lift cabin and cabin with
people.
