3. OPERATION
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LZT 123 7361 R1A
3.4 Operating States/LED
The modem has a green LED, as depicted below, which is used to
indicate various operating states. These states are described in
following table.
Notes! Switch off (Power Down): DC power is applied but the modem is
switched OFF.
Standby: The GM29 is switched ON and camped on to the network. No
call in progress.
Talk: The GM29 is switched ON and a voice/data call is in progress.
Operating State LED Status
After switching on the modem On after 4s
Switch off (Power down) or power removed Off
Standby or talk Flashing
No network, network search, no SIM card, no PIN
entered
On
LED