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Instructions for internal telephone installations by specialised personnel.
Procedure for inserting the SIM card, including warning about disabling the PIN.
Instructions on how to screw the antenna cable into the module connector.
Connects the GSM400 to a standard telephone or PABX via RJ-11 or TEL terminal.
Details connection for 230Vac external adapter and 12Vdc power supply, including backup batteries.
Steps to power on the gateway, wait for network registration, and check status LEDs.
Guidance on optimal location, avoiding interference, and installation in specific environments.
Allows changing the password for SMS programming and 'Automatic converter' service.
Procedure to check GSM signal level using tones on the telephone.
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General