Specifications

Chapter 7 – Short Messages Commands
Multi-Tech Systems, Inc. CDMA AT Commands Reference Guide (PN S000294K) 45
Send Message +CMGS
Description: This command is used to send a SMS message. This is a two line command. The first line includes the
command and its associated parameters. The second line of this command is the SMS message content. A
message terminator character <term> is specified as the last character of the message text and servers to
initiate message transmission or abort the +CMGS command.
Note: If the “FD” facility is enabled, only the <da> entries in the FDN phonebook can be sent.
Syntax: Command syntax: AT+CMGS=<da> [,<length>] [,<priority>] [,<privacy>] [,<reply>] [,<cbn>] <cr><message
text> [<term>]
Command Possible responses
AT+CMGS=”8585551212”<cr>
Please call me soon, Fred. <ctrl-Z>
Note: Send a message
+CMGS:<mr>
OK
Note: Message reference output.
AT+CMGS=”8585551212”,2,1,1”5550000”<cr>
Please call ASAP<ctrl-Z>
Note: Send a message with the specified
priority, privacy, reply option and call back
number. Note that the <length> parameter is
omitted.
+CMGS:<mr>
OK
Note: Message reference output.
AT+CMGS=”8585551212”,19<cr>
<ESC>Call me at 5551212
Note: Send a nineteen byte message that
includes the <ESC> character.
+CMGS:<mr>
OK
Note: Message reference output.
AT+CMGS="8585551212"<cr> <Unicode
message><0x00 0x1A>
Note: Unicode message. Two byte Unicode
message <ctrl-Z> terminator.
+CMGS:<mr>
OK
Note: Message reference output.
Values: <da> Destination address value; ASCII digit character phone number.
<length> Length of the text message (in bytes). If specified, the message is automatically sent when this
number of message bytes have been entered. Terminator characters that are part of the
message text are ignored. If not specified, a message terminator character <term> must be
used.
<priority> The priority level of the message.
0 Normal (default)
1 Interactive
2 Urgent
3 Emergency
<privacy> The privacy level of the message.
0 Not restricted (default)
1 Restricted
2 Confidential
3 Secret
<reply> The reply options for the message.
0 No acknowledge requested (default)
1 Positive user acknowledge request
2 Delivery acknowledge request
3 Request both user acknowledge and delivery acknowledge
<cbn> The call back number; ASCII digit character phone number.
<cr> Required first line terminator; ASCII carriage return character (0x0d).
<message text> Message text; ASCII or UCS2 Unicode formatted. See section 20.11 for more information
on Unicode formatting.
<term> Message terminator. Ignored if <length> is specified.
ASCII message:
<ctrl Z> (0x1A) to send the message
<ESC> (0x1B) to abort the message
Unicode message:
0x00 0x1A to send the message
0x00 0x1B to abort the message
Note: For the RUIM software edition using some SIM cards, the maximum supported message text length is 99 characters.
Longer message texts will be truncated to 99 characters when read.
The maximum message text length for all other software editions is 160 characters.