Panasonic Toughbook CF-18 mk3 Supplementary Instructions Manual page 6

Names and Functions of Parts
LED Description
6
GSM/GPRS/EGPRS Switch
The GSM/GPRS/EGPRS modem powers up independently from the com-
puter regardless of the computer power status and will remain on when
the computer's power is off. This function depends on the setting of
the Setup Utility.
Power On Indication - Green:
A green LED will be used to signal when the GSM/GPRS/EGPRS modem
has been powered on.
Ring Indication - Amber:
The LED will flash when the GSM/GPRS modem has received a ring.
Status Indication - Green:
The LED will light while communicating.
Mode
Off
600 ms On/
600 ms Off
75 ms On/3 s Off
75 ms On/75 ms Off/
75 ms On/3 s Off
Flashing
On
Function
GSM/GPRS/EGPRS modem is off or running in
SLEEP or Alarm.
No SIM card inserted or no PIN entered, or network
search in progress, or ongoing user authentication,
or network login in progress.
Logged to network (monitoring control channels
and user interactions). No call in progress.
One or more GPRS/EGPRS contexts activated.
Indicates GPRS/EGPRS data transfer: When a
GPRS/EGPRS transfer is in progress, the LED goes
on within 1 second after data packets were
exchanged. Flash duration is approximately 0.5 s.
Depending on type of call:
Voice call: Connected to remote party.
Data call: Connected to remote party or exchange of
parameters while setting up or disconnecting a call.