Chapter 8 – Short Messages Commands
Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C 56
Select Message Service +CSMS Description: This command is used to display the supported SMS services. The supported services are
originated (SMS-MO) and terminated short message (SMS-MT) + Cell Broadcast Message
(SMS-CB) services.
Values: <MO>
0: Mobile Originated SMS not supported.
1: Mobile Originated SMS supported.
<MT>
0: Mobile Terminated SMS not supported.
1: Mobile Terminated SMS supported.
<CB>
0: Broadcast SMS not supported.
1: Broadcast SMS supported.
Syntax: Command syntax: AT+CSMS?
Command Possible Responses
AT+CSMS?
Note: Display current values
+CSMS: <MO>,<MT>,<CB>
OK
Note: SMS-MO, SMS-MT and SMS-CB support
New Message Acknowledgement +CNMA Description: This command allows reception of a new message routed directly to the TE to be
acknowledged.
In TEXT mode, only positive acknowledgement to the network (RP-ACK) is possible.
Acknowledge with +CNMA is possible only when a +CMT or +CDS indication is shown (see
+CNMI command).
Note: This AT command is not designed for input of the command into the Hyper terminal by
hand since the acknowledgement will not be quick enough to be received by the network.
However, it is possible for the client system to automatically send this command when the
+CNMI is set to “2,2,0,0,0”.
Syntax: Command syntax: AT+CNMA
Command Possible Responses
AT+CNMI=2,2,0,0,0 OK
+CMT:”8587351530”,”02/04/03,11 :06
:38”,129,7,0<CR><LF>
Testing
Note: Message received
AT+CNMA
Note: Acknowledge the message received
OK
Note: Send positive acknowledgement to the network
AT+CNMA
Note: Try to acknowledge again
+CMS ERROR : 340
Note: No +CNMA acknowledgment expected