User Manual

Table Of Contents
SARA-R4/N4 series-AT Commands Manual
UBX-17003787 - R11
14System features
Page 157 of 308
Parameter Type Description
GPRS Timer 3 IE in 3GPP TS 24.008 Table 10.5.163a/3GPP TS 24.008 [12]. See also
3GPP TS 23.682 [153] and 3GPP TS 23.401 [154].
SARA-R4 - The factory-programmed value is 150 s. The default value is "01100000".
<Requested_Active_
Time>
String One byte in an 8 bit format. Requested Active Time value (T3324) to be allocated to
the UE. The requested Active Time value is coded as one byte (octet 3) of the GPRS
Timer 2 information element coded as bit format (e.g. "00100100" equals 4 minutes).
For the coding and the value range, see the GPRS Timer 2 IE in 3GPP TS 24.008 Table
10.5.163/3GPP TS 24.008 [12]. See also 3GPP TS 23.682 [153], 3GPP TS 23.060 [10]
and 3GPP TS 23.401 [154].
SARA-R4 - The factory-programmed value is 6 s. The default value is "00000000".
14.7.4Notes
The <Requested_Periodic_RAU> and <Requested_GPRS_READY_timer> parameters are not supported.
SARA-R4
<mode>= 2 is not supported.
Reboot the module after enabling the Power Save Mode in order to enter the PSM state.
The PSM mode cannot be enabled with a PIN enabled UICC card.
14.8Power Saving Mode Assigned Values +UCPSMS
+UCPSMS
SARA-R410M-01B SARA-R410M-02B SARA-R410M-52B SARA-R412MModules
SARA-N4
Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributes
full Yes No No - +CME Error
14.8.1Description
Reads the UEs power saving mode (PSM) parameters assigned by the network. The command returns the
state of PSM on the UE, as well as:
the requested extended periodic RAU value in GERAN/UTRAN
the requested GPRS READY timer value in GERAN/UTRAN
the requested extended periodic TAU value in E-UTRAN
the requested Active Time value
To be noticed that
Power saving mode enabled (+UCPSMS: 1): everything on the device is powered down except for the Real
Time Clock (RTC) after the expiry of T3324 (Active Time). It will stay powered down until the expiry of T3412
(Extended TAU Timer) or if the Power On line is toggled.
Power saving mode disabled (+UCPSMS: 0): the device will not enter the Power Save Mode (PSM).
14.8.2Syntax
Type Syntax Response Example
Read AT+UCPSMS? +UCPSMS: <mode>,[<Assigned_
Periodic_RAU>],[<Assigned_GPRS_
READY_timer>],[<Assigned_
Periodic_TAU>],[<Assigned_Active_
Time>]
OK
+UCPSMS: 1,,,"01000011","01000011"
OK
14.8.3Defined values
Parameter Type Description
<mode> Number Indication to disable or enable the use of PSM in the UE. Allowed values:
0: use of PSM disabled
1: use of PSM enabled