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52GPS1200
Operation
Signal
strength
LED
GFU19 (US),
GFU25 (CAN)
with CDMA
MultiTech
MTMMC-C
red device is on, not registered on
the network.
flashing red device is on, registered on the
network.
off download mode or device is off.
GFU17 with
Siemens MC45
red call is in progress.
red: long flash,
short break
no SIM card inserted, no PIN
entered or network search, user
authentication or network login in
progress.
red: short flash,
long break
logged onto network, no call in
progress.
off device is off.
IF the on is THEN