User Manual

<da>: destination address
 wait for prompt ">"
 send SMS text (MAX 160 characters)
 end command with CTRL-Z character (0x1A hexadecimal) or abort command
with ESC character (0x1B hexadecimal)
 wait for response:
Response
Reason
Action
+CMGS: <mr>
OK
Message has been successfully
sent. <mr> represents the message
reference number.
proceed ahead
ERROR
some error occurred
Enable the extended error codes
report (see par. 4.4.2.1) and retry.
+CMS ERROR: 330
SMSC address unknown
Insert SMSC address (see par.
5.6.1.3)
+CMS ERROR: 41
"Temporary Failure", may be that
the device is not registered on any
network
Check for signal strength and
network registration
+CMS ERROR: 331
No network service
Check for signal strength and
network registration
+CMS ERROR: 1
Unassigned number
The destination address number
does not exist. Check it and repeat
command.
+CMS ERROR: 42
network congestion
Retry later
+CMS ERROR: 96
Mandatory information missing
Check for destination address in
the SMS, overwrite it and retry.
OK
command aborted by user
you issued a ESC char
For example:
1- Let us assume you want to directly send a new SMS to the destination address number
[phone]. We suppose you already have set up the device for text SMS mode as
described on the previous paragraphs:
command
AT+CMGS="[phone]"
response:
>
now you can insert the message text in IRA format (note that the IRA format and ASCII
format coincide for the alphabet characters but not for the other).
…here will be inserted the SMS message text to be sent…
conclude text with the character CTRL-Z
response: