Specifications

Chapter 18 – Sleep Commands
110 Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide
32kHz Sleep Mode +W32K
Description: This specific command allows the 32kHz sleep mode to be enabled or disabled. When sleep
mode is entered, the product uses a 32kHz internal clock during inactivity stages.
Syntax: AT+W32K=<mode>
Command
Possible Responses
AT+W32K=<mode>[,<DTR Used>]
OK
AT+W32K?
Note: Query current setting
+W32K: 1,0
OK
AT+W32K=?
Note: Query available settings
+W32K: (0-1),(0-1)
OK
Values: <mode>
0 Disable 32kHz sleep mode
1 Enable 32kHz sleep mode
<DTR Used>
0 DTR cannot be used to wake up the modem
1 DTR can be used to wake up the modem. DTR high wakes up the modem. DTR
low puts the modem to sleep.
Notes:
The modem will not go to sleep if any of the following conditions are true:
 The modem is not registered to the network. If it has stopped searching for a network due
to a UOOS timeout, the modem will go to sleep.
 The modem is in the middle of an NV Backup.
 DTR is asserted, and it has been enabled as a sleep control (AT+W32K=1,1).
 The modem is in a call state other than idle.
 Deep Sleep mode is disabled; i.e., AT+W32K=1 has not been issued.
 The modem can take up to a minute to enter sleep after the +W32K command is issued.
This can occur when it is in the middle of GPS processing such as GPS demodulation.
The modem will wake up from sleep when any of the following conditions are true.
 An incoming call can wakeup the modem from deep sleep. Once the call hangs up, the
modem will go back to deep sleep.
 The UART is connected and the DTR pin is asserted (if AT+W32K=1,1 was issued).
 In deep sleep, unsolicited messages are not buffered and will be discarded. If real-time
notifications of events are needed, the Ring Indicator can be used. After the modem
wakes up, new unsolicited messages will be received.