Siemens manual AC75ATCV01.002 495 10/30/06 Confidential / Released

AC75 AT Command Set

19.7 AT^SSYNC

s

LED behavior	ME operating status if AT^SSYNC=1	ME operating status if AT^SSYNC=2
25 ms on / 4 * <n> ms off 2)	Not possible: With AT^SSYNC=1, LED	SLEEP mode is activated (AT+CFUN
	signalization is disabled in SLEEP	parameter <fun> ≠ 1) while the ME is
	mode.	registered to the GSM network and in
		IDLE mode.
25 ms on / <m> ms off /	Not possible: With AT^SSYNC=1, LED	SLEEP mode is activated (AT+CFUN
25 ms on / 3 * <m> ms off	signalization is disabled in SLEEP	parameter <fun> ≠ 1) while the ME is
2)	mode.	registered to the GSM network. Addi-
		tionally, PDP context is activated.

1)When a temporary wake-up event (for example a call, a URC, a packet switched transfer) occurs in CYCLIC SLEEP mode the LED flashes according to the patterns listed above. See Section 2.9.1, Wake up the ME from SLEEP mode for details on the various SLEEP modes and wake-up events.

2)The duration of <n> and <m> depends on the network: In SLEEP mode, the module can only change its LED status during intermittent wake-up periods when listening to paging information from the base station. Therefore the values of <n> and <m> vary as follows:

<n> = value from 471 ms to 2118 ms <m> = 3000 ms

AC75_ATC_V01.002	Page 495 of 569	10/30/06
Confidential / Released