SARA-R4/N4 series-AT Commands Manual
UBX-17003787 - R09

9Short Messages Service
Page 76 of 307
The MT shall automatically disable routing to the TE by setting both <mt> and <ds> values of +CNMI to zero.
If the command is executed, but no acknowledgement is expected, or some other MT related error occurs, the
final result code +CMS ERROR: <err> is returned.
In PDU mode, it is possible to send either positive (RP-ACK) or negative (RP-ERROR) acknowledgement to the
network. The <n> parameter defines which one will be sent. Optionally (when <length> is greater than zero) an
acknowledgement TPDU (SMS-DELIVER-REPORT for RP-ACK or RP-ERROR) may be sent to the network. The
entering of PDU is done similarly as specified in +CMGS command, except that the format of <ackpdu> is used
instead of <pdu> (i.e. SMSC address field is not present). The PDU shall not be bounded by double quotes.
9.9.2î™–î™–î™–î™–Syntax
Type Syntax Response Example
Text mode (+CMGF=1):
AT+CNMA
OK AT+CNMA
OK
Set
PDU mode (+CMGF=0):
AT+CNMA[=<n>[,<length> [PDU is
given<Ctrl-Z>/<ESC>]]]
OK AT+CNMA=1,5
>0007000000 <Ctrl-Z>
OK
Text mode (+CMGF=1):
OK
OKTest AT+CNMA=?
PDU mode (+CMGF=0):
+CNMA: (list of supported <n>s)
OK
+CNMA: (0-2)
OK
9.9.3î™–î™–î™–î™–Defined values
Parameter Type Description
<n> Number
• 0: the command operates similarly as defined for the text mode
• 1: sends RP-ACK (or buffered result code received correctly)
• 2: sends RP-ERROR (if PDU is not given, ME/TA shall send SMS-DELIVER-REPORT
with 3GPP TS 23.040 [8] TP-FCS value set to 'FF' (unspecified error cause))
<length> Number PDU's length in octets without the Service Center's address
9.10î™–î™–î™–î™–List message +CMGL
+CMGL
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 Up to 3 min (<1
s for prompt ">"
when present)
+CMS Error
9.10.1î™–î™–î™–î™–Description
Returns SMS messages with status value <stat> from message storage <mem1> to the DTE. If status of the
received message is "received unread", status in the storage changes to "received read".
9.10.2î™–î™–î™–î™–Syntax
Type Syntax Response Example
Set Text mode (+CMGF=1):
AT+CMGL[=<stat>]
Command successful and
SMS-DELIVERs:
+CMGL: <index>,<stat>,<oa>,
[<alpha>],[<scts>][,<tooa>,
<length>]
<data>
[+CMGL: <index>,<stat>,<oa>,
[<alpha>],[<scts>][,<tooa>,
<length>]<data>[...]]
AT+CMGL
+CMGL: 303,"REC READ","+39340
1234999",,"08/08/06,10:01:38+08"
You have a missed called. Free
information provided by your
operator.
OK
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