Ublox SARA-R4 Series - Network service; 7.2 Signal quality +CSQ

SARA-R4/N4 series-AT Commands Manual
UBX-17003787 - R09
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7Network service
Page 40 of 307
7Network service
7.1Subscriber number +CNUM
+CNUM
SARA-R404M 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 < 10 s +CME Error
7.1.1Description
Returns the MSISDNs related to this subscriber. If the subscriber has different MSISDN for different services,
each MSISDN is returned in a separate line.
MSISDN is read from the SIM.
7.1.2Syntax
Type Syntax Response Example
Action AT+CNUM +CNUM: [<alpha1>],<number1>,
<type1>
[+CNUM: [<alpha2>],<number2>,
<type2>
[...]]
OK
or
OK
+CNUM: "Mario Rossi","+39320
821708",145
+CNUM: "ABCD . AAA","1234567890
12",129
OK
Test AT+CNUM=? OK
7.1.3Defined values
Parameter Type Description
<alphax> String Associated with <numberx>
<numberx> String Phone number of format specified by <typex>
<typex> Number Type of address, octet in Number format (145 when <numberx> string includes '+',
otherwise 129)
7.2Signal quality +CSQ
+CSQ
SARA-R404M 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 No No No - +CME Error
7.2.1Description
Returns the Received Signal Strength Indication (RSSI) <rssi> and <qual> from the MT.
SARA-R4 / SARA-N4
The radio signal strength <rssi> will be also used to build and display the indicator "signal" i.e. signal quality
in the information text response of +CIND and in the +CIEV URC (see the +CMER command description).
In dedicated mode, during the radio channel reconfiguration (e.g. handover), invalid measurements may be
returned for a short transitory because the MT must compute them on the newly assigned channel.