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TC63 AT Command Set  
19.6 AT^SSYNC
s
TC63_ATC_V00.490
Page 449 of 501
5/24/05
Confidential / Draft - Do not copy
 
Note: When the ME is in Limited Service or IDLE mode with/without PDP context activated, the on/off time ratio
of the LED is always the same, no matter whether or not power saving is enabled. The only difference is that in
SLEEP mode the duration of the on/off periods is a multiple n of the equivalent periods without SLEEP mode.
The multiple n is synchronous to the active state of CTS during SLEEP mode (where CTS is set/reset every 0.9
- 2.7 seconds. See also 
 for the timing of CTS. 
n * 75 ms on / n * 3 ms off Not possible: With 
=1, LED 
signalization is disabled in SLEEP 
mode. 
SLEEP mode is activated (
parameter 
≠ 1) while the ME is 
registered to the GSM network. 
n * 500 ms on / n * 25 ms 
off
Not possible: With 
=1, LED 
signalization is disabled in SLEEP 
mode. 
SLEEP mode is activated (
parameter 
≠ 1) while the ME is 
registered to the GSM network. Addi-
tionally, PDP context is activated.
LED behavior 
ME operating status if 
AT^SSYNC
=1 
ME operating status if 
AT^SSYNC
=2