Siemens AC75 - Manual (Page 494)

AC75 AT Command Set
19.7 AT^SSYNC
s
AC75_ATC_V01.002 Page 494 of 569 10/30/06
Confidential / Released
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
AT^SSYNC
parameter
<mode>
=1 and
<mode>
=2. To better monitor the operating states
while power saving is enabled, we recommend that priority be given to
<mode>
=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
AT+CFUN
only. For details see
notes provided with
AT+CFUN
. Therefore, while the USB cable is plugged, the LED is always on and flashes as
if the module works at
AT+CFUN
=1, no matter whether
AT^SSYNC
=1 or
AT^SSYNC
=2 is enabled.
Table 19.1: Modes of the LED and indicated ME functions
LED behavior ME operating status if
AT^SSYNC
=1 ME operating status if
AT^SSYNC
=2
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
AT^SSYNC
=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
AT^SSYNC
=1
75 ms on / 75 ms off /
75 ms on / 3 s off
One or more GPRS PDP contexts acti-
vated.
Same as for
AT^SSYNC
=1
500 ms on / 50 ms off Packet switched data transfer is in
progress.
Same as for
AT^SSYNC
=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
AT^SSYNC
=1
<n> ms on / <n> ms off 2) Not possible: With
AT^SSYNC
=1, LED
signalization is disabled in SLEEP
mode.
SLEEP mode is activated (
AT+CFUN
parameter
<fun>
≠ 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.