Cnma-Acknowledge New Message; Command Syntax; Description - Huawei MU509 At Command Interface Specification

HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification
3: Delete all read messages from preferred message storage, sent and unsent mobile
originated messages leaving unread messages untouched.
4: Delete all messages from preferred message storage including unread messages.
Note:
6.9 +CNMA–Acknowledge New Message

6.9.1 Command Syntax

Command
If +CMGF=0:
+CNMA[=<n>[,<length>[<CR>
PDU is given<ctrl-Z/ESC>]]]
If +CMGF=1:
+CNMA<CR>
+CNMA=?

6.9.2 Description

The SET command confirms reception of a new message which is routed directly to
the TE. This acknowledgement command shall be used when +CSMS parameter
<service> equals 1. For the usage of this command, see also description of "+CNMI"
command.
In PDU mode, it is possible to send either positive (RP-ACK) or negative (RP-ERROR)
acknowledgement to the network. Parameter <n> defines which one will be sent.
Optionally, 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 command send message +CMGS, except that the format of <ackpdu> is
used instead of <pdu>. PDU shall not be bounded by double quotes.
MS shall not send another +CMT or +CDS result code to TE before previous one is
acknowledged.
Issue 04 (2013-01-28)
If the message doesn‟t exist, the READ command will return OK.
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Short Message Service Commands
Possible response(s)
<CR><LF>OK<CR><LF>
In case of SMS-related error:
<CR><LF>+CMS ERROR: <err><CR><LF>
If +CMGF=0:
<CR><LF>+CNMA: (list of supported
<n>s)<CR><LF>
<CR><LF>OK<CR><LF>
If +CMGF=1:
<CR><LF> OK<CR><LF>
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