Wake Up The Me From Sleep Mode - Multi-Tech MultiModem EDGE Reference Manual

<rst>
The parameter can only be used if the serial interface is enabled.
Due to the command syntax, you need to enter parameter <fun>, followed by <rst>, where <fun> is only a
placeholder and has no effect. See examples below.
0 Placeholder for <fun> as stated above. Default.
1 ME resets and restarts to full functionality. After reset and restart, PIN 1 authentication is necessary
(AT+CPIN). If autobauding is enabled, it is recommended to wait 3 to 5 seconds before entering the first
AT command. For details on autobauding refer to Section 4.9.1, Autobauding.
Unsolicited Result Codes:
URC 1
^SYSSTART
Indicates that the ME has been started and is ready to operate. If autobauding is active (AT+IPR=0), the URC
is not generated.
If the ME is configured to enter the Airplane mode after restart or reset the following URC is received on boot
up:
"^SYSSTART AIRPLANE MODE". In this mode, only the AT commands listed in Section 20.4, Availability
of AT Commands Depending on Operating Mode of ME can be used. For details please
refer to the AT^SCFG command, parameter <mapos>.
Notes:
•
When a circuit-switched call is in progress, <fun>=7 or 9 can be activated without terminating the call.
However, setting <fun>=0, during a circuit-switched call immediately disconnects this call.
•
To check whether power saving is on, you can query the status with the read command AT+CFUN? only if the
module is in full functionality mode or in CYCLIC SLEEP mode. If available, you can also take advantage of
the status LED controlled by the SYNC pin (see AT^SSYNC). With AT^SSYNC you can select different modes
of LED signalization during SLEEP modes (See Section 18.4.1., ME Status Indicated by Status LED for
details. However, the module can wake up temporarily from power saving without leaving its CYCLIC SLEEP
mode (without changing +CFUN "<fun>"); e.g., for a network scan after a loss of radio coverage, or after
receipt of serial data during CYCLIC SLEEP mode. During this "temporary wakeup state" the LED will operate
as if the ME was in full functionality mode.
• Recommendation: In NON-CYCLIC SLEEP mode, you can set an RTC alarm to wake up the ME and return to
full functionality. This is a useful approach because, in this mode, the AT interface is not accessible.

2.9.1 Wake up the ME from SLEEP Mode

A wake-up event is any event that causes the mobile equipment (ME) to draw more current. Depending on the
selected mode, the wake-up event either switches the SLEEP mode off and takes the ME back to full
functionality AT+CFUN=1, or activates the ME temporarily without terminating the selected SLEEP mode.
Definitions of the state transitions described in the table below:
•
Quit: ME exits SLEEP mode.
•
Temporary: ME becomes active temporarily for the duration of the event and the mode-specific follow-up
time after the last character was sent or received on the serial interface.
• No effect: Event is not relevant in the selected SLEEP mode. The ME does not wake up.
Table 2.3: Wake-up Events in NON-CYCLIC and CYCLIC SLEEP Modes
Event
Reset Line
RTS0 or RTS1 activation
Unsolicited Result Code (URC)
Incoming voice or data call
Any AT command (incl. outgoing SMS,
voice or data call)
Incoming SMS (AT+CNMI is set to 0,0
(this is the default setting)
Incoming SMS (AT+CNMI is set to 1,1) Quit
GPRS data transfer
RTC alarm line
AT+CFUN=1
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371G)
Selected mode: <fun>=0
Quit
Quit
Quit
Quit
Not possible (UART disabled)
No effect
Not possible (UART disabled)
Quit
Not possible (UART disabled)
Chapter 2 – Configuration Commands
Selected mode: <fun>=7 or 9
Quit
Mode 7: No effect (RTS is only
used for flow control)
Mode 9: Temporary
Temporary
Temporary
Temporary
No effect
Temporary
Temporary
Temporary
Quit
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