DSC GSM 1000 Installation Manual page 21

Loss of Cellular Communication: Indicates that the GSM 1000 is not able to communicate with the cellular
network. Make sure that the antenna is securely connected to the antenna connector, all wiring and cables
are secure and undamaged, and that metal objects have not obstructed the antenna. Check the supply
voltage to the GSM 1000 radio between BELL_IN and BLK terminal points. If there is no power at these
terminals, the transceiver will not function, the micro-controller will register a "Cell Problem" and the LED
will flash 4 times.
PGM Fault: Indicates that there is a problem with the connection between the GSM 1000 PGM terminal and
the control panel's PGM terminal. Check the following:
• Ensure that the PGM terminal is connected to the control panel's PGM terminal
• Ensure that the control panel's PGM Output has been programmed for GSM 1000 operation
• Ensure that no other connections have been made to the control panel's PGM terminal
• Ensure that the GSM 1000 power supply terminals are connected to the control panel's proper terminals
• Ensure that a resistor has been added as shown in the hookup diagrams. Refer to the Hookup Diagram
for information on the resistor required.
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