Gsm Power Saving Modes For Serial Devices - Multitech SocketModem Cell HSPA+ MTSMC-H5 Series Device Manual

Notes

Issuing AT+CFUN=4[,0] actually causes the device to perform either a network deregistration or a SIM
deactivation.

Enabling power saving reduces power consumption during idle time, thus allowing a longer standby time with a
given battery capacity.

To place the device in power saving mode, set the <fun> parameter to value = 5 and the line DTR (RS232) to
OFF.

Once in power saving, the CTS line switch to the OFF status to signal that the device is really in power saving
condition.

During the power saving condition, before sending any AT command on the serial line, set the DTR to ON
(0V) to exit from power saving and wait for the CTS (RS232) line to go in ON status.

Power saving does not affect the network behavior of the device. Even during the power save condition the
device remains registered on the network and reachable for incoming calls or SMS. If a call comes in during the
power save, the device will wake up and proceed normally with the unsolicited incoming call code.

When the device detects a connected USB port, the power saving mode is not allowed.

In CYCLIC SLEEP mode (AT+CFUN=7) CTS line toggles slowly, the toggle delay is about 2 seconds.

In CYCLIC SLEEP mode (AT+CFUN=7) during incoming voice call the CTS line continues to toggle.

GSM Power Saving Modes for Serial Devices

The H5 serial devices provide a function that reduces the power consumption when they are in IDLE state (waiting
for a call), allowing a longer activity with a given battery capacity. You can configure the power saving function in
several modes as needed.
To verify the power saving modes supported by your device, use the AT+CFUN=? command.
AT+CFUN=?
+CFUN: (0,1,2,4,5,7,9),(0)
OK
AT+CFUN=?
+CFUN: (0,1,2,4,5,7,9),(0, 1)
OK
AT+CFUN=?
+CFUN: (0,1,4,5,7),(0, 1)
OK
To select the power saving mode for your device, use the following AT Command:
AT+CFUN=[<fun>[,<rst>]]
Example
Check the current mode:
AT+CFUN?
+CFUN: 1
OK
CFUN = 1, device with full functionality and power saving disabled (factory setting)
SocketModem Cell HSPA and SocketModem iCell HSPA MTSMC-H5 Device Guide
Legacy device.
Device supports all modes.
Device in the H5 family.
CHAPTER 3 – SPECIFICATIONS
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