Telit Wireless Solutions ME310G1 - AT+CNMA - New Message Acknowledgement

ME310G1/ME910G1/ML865G1 AT Commands Reference Guide
80617ST10991A Rev. 11 Page 407 of 1039 2021-09-23
Not Subject to NDA
3.6.11. AT+CNMA - New Message Acknowledgement
This command is used to confirm the correct reception of a new message.
3GPP TS 27.005
SIM Presence
Setting saved
Can be aborted
MAX timeout
SELINT
Not required
No
No
-
2
AT+CNMA
Execution command confirms correct reception of a new message (SMS-
DELIVER or SMS-STATUS-REPORT) which is routed directly to the TE.
Acknowledge with +CNMA is possible only if the +CSMS parameter is set
to 1 (+CSMS=1) when a +CMT or +CDS indication is shown.
If no acknowledgement is given within the network timeout (17 seconds),
an RP-ERROR is sent to the network, the <mt> and <ds> parameters of
the +CNMI command are then reset to zero (do not show new message
indication).
If command is executed, but no acknowledgement is expected, or some
other ME related error occurs, result code +CMS ERROR: <err> is
returned.
The AT command syntax and functionalities are different between SMS
PDU Mode and SMS Text Mode, as explained in Additional info sections.
Additional info:
PDU Mode
AT+CNMA[=<n>[,<length>[<CR>PDU is given<ctrl-Z/ESC>]]]
Either positive (RP-ACK) or negative (RP-ERROR)
acknowledgement to the network is possible. Parameter <n>
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.