The set command sets the power saving mode. Sets activity timer and Power Saving Mode (PSM) period after Non-access Stratum (NAS) signaling connection release. The command configuration is
stored to Non-volatile Memory (NVM) approximately every 48 hours and when the modem is
powered off with the +CFUN=0
command.
Syntax:
+CPSMS=[<mode>[,<Requested_Periodic-RAU>,<Requested_GPRS-READY-timer>
,<Requested_Periodic-TAU>[,<Requested_Active-Time>]]]
The
command can be given as +CPSMS=
(with all parameters omitted). In this
form, the parameter <mode> is set to 0, the use of PSM is disabled,
and data for all parameters is set to the manufacturer-specific default values.
The set command parameters and their defined values are the following:
Optional. Timer value updated if present. If not present, the value of the requested Periodic-TAU is set to the manufacturer-specific default. For the coding and value range, see the GPRS Timer 3 IE in 3GPP TS 24.008 Table 10.5.163a/3GPP TS 24.008.
Bits 5 to 1 represent the binary coded timer value.
Bits 8 to 6 define the timer value unit for the General Packet Radio Services (GPRS) timer as follows:
Bits
8 7 6
0 0 0 – Value is incremented in multiples of 10 minutes
0 0 1 – Value is incremented in multiples of 1 hour
0 1 0 – Value is incremented in multiples of 10 hours
0 1 1 – Value is incremented in multiples of 2 seconds
1 0 0 – Value is incremented in multiples of 30 seconds
1 0 1 – Value is incremented in multiples of 1 minute
+CPSMS=0
and
+CPSMS=1
.1 1 1 – Value indicates that the timer is deactivated
Optional. Timer value updated if present. If not present, the value of the requested Active-Time is set to the manufacturer-specific default. For the coding and value range, see the GPRS Timer 2 IE in 3GPP TS 24.008 Table 10.5.163/3GPP TS 24.008.
Bits 5 to 1 represent the binary coded timer value.
Bits 8 to 6 define the timer value unit for the GPRS timer as follows:
Bits
8 7 6
0 0 0 – Value is incremented in multiples of 2 seconds
0 0 1 – Value is incremented in multiples of 1 minute
0 1 0 – Value is incremented in multiples of 6 minutes
1 1 1 – Value indicates that the timer is deactivated
The following command example enables power saving mode and set timer values. Set Periodic-TAU timer to 10 minutes and Active-Time to 1 minute:
AT+CPSMS=1,"","","10101010","00100001"
OK
The following command example disables power saving mode:
AT+CPSMS=0
OK
The following command example disables power saving mode and sets timer to default values:
AT+CPSMS=
OK