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+CMGS 00
OK
Where 00 is the message reference number.
Creating a PDU can be complicated. Fortunately there are online convertors that can
help you create the PDU.
http://smstools3.kekekasvi.com/topic.php?id=288
and
http://rednaxela.net/pdu.php
are good examples of the tools available online to help you
create a PDU
Receiving an SMS Message
Before you receive an SMS message, you need to decide how you want to be notified
when an incoming text message arrives. This is done using the
AT+CNMI
command. If
you do not want the modem to pass a message to your application, enter
AT+CNMI=0,0
When using this setting, the modem does not report incoming texts to your application.
You can enter
AT+CMGL
to check to see if the modem has any unread texts.
If you want the modem to notify you of an incoming text, use the
AT+CMNI=2,1
command. When the modem receives a text, it will notify your application with the
+CMTI: SM, <index>
result code, where
SM
stands for SIM
and
<index>
is the location
in the SIM memory. For example:
+CMTI: “SM”, 3
Tells you that the modem just received a text and it’s stored on the SIM card in location
3. To read this message you use the
AT+CMGR
command. For example, to read the
message in the example above, enter:
AT+CMGR=3
The modem will respond with the SMS message that was just received and stored in
location
3
. For more information about these commands, please refer to the Huawei AT
Command manual available at
www.zoomtel.com/4575support
.
If the message was sent in PDU format, it will appear as a series of hex numbers that
you will need to decode. There are several online sites that will help you decode the
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