1 me status indicated by status led patterns, Me status indicated by status led patterns, Table 19.1 – Siemens AC75 User Manual
Page 494: Modes of the led and indicated me functions, Section, Me status indicated by status led, Patterns, Me status indicated by, Status led patterns, Ac75 at command set
AC75 AT Command Set
19.7 AT^SSYNC
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AC75_ATC_V01.002
Page 494 of 569
10/30/06
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19.7.1
ME status indicated by status LED patterns
The following table lists the possible patterns of status LED behavior, and describes the ME operating status indi-
cated by each pattern if
parameter
=2. To better monitor the operating states
while power saving is enabled, we recommend that priority be given to
=2.
During the transition from one LED pattern to another the "on" and/or "off" periods of the LED may vary in length.
This is because an event that triggers the change may occur any time and, thus, truncate the current LED pattern
at any point.
The statements on LED behavior during SLEEP mode are not applicable if the USB cable is plugged. This is
because power saving with connected USB host does not take effect if set with
only. For details see
notes provided with
. Therefore, while the USB cable is plugged, the LED is always on and flashes as
if the module works at
=1, no matter whether
=2 is enabled.
Table 19.1: Modes of the LED and indicated ME functions
LED behavior
ME operating status if
ME operating status if
Permanently off
ME is in one of the following modes:
- POWER DOWN mode
- AIRPLANE mode
- CHARGE ONLY mode
- NON-CYCLIC SLEEP mode
- CYCLIC SLEEP mode with no tempo-
rary wake-up event in progress
1)
ME is in one of the following modes:
- POWER DOWN mode
- AIRPLANE mode
- CHARGE ONLY mode
600 ms on / 600ms off
Limited Network Service: No SIM card
inserted or no PIN entered, or network
search in progress, or ongoing user
authentication, or network login in
progress.
Same as for
=1
75 ms on / 3 s off
IDLE mode: The mobile is registered to
the GSM network (monitoring control
channels and user interactions). No call
is in progress.
Same as for
=1
75 ms on / 75 ms off /
75 ms on / 3 s off
One or more GPRS PDP contexts acti-
vated.
Same as for
=1
500 ms on / 50 ms off
Packet switched data transfer is in
progress.
Same as for
=1
Permanently on
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.
Same as for
=1
2)
Not possible: With
=1, LED
signalization is disabled in SLEEP
mode.
SLEEP mode is activated (
≠ 1), but the ME is not
registered to the GSM network (e.g. SIM
not inserted or PIN not entered, and
therefore, either no network service or
only Limited Network Service is avail-
able.