Chapter 3 – Using Your Wireless Modem
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide
31
Using Short Message Services (SMS)
Sending a Short Message to a Specified Number
1.
Type
AT+CMGS="8585551212" <press Enter>
2.
Then type your message:
Please call me soon. <press ctrl Z>
3.
The modem may respond with
+CMGS:<mr> OK
Writing a Message to Memory
You can store a message to send it at a later date.
1.
Type
AT+CMGW="8585551212" <press Enter>
2.
Type the message.
<press ctrl Z>
3.
The modem may respond with
+CMGW: 4 OK
(The message is stored in the index as message 4.)
Sending a Message from Storage
1.
Type
AT+CMSS=x,"8585551212" <press Enter>
2.
The modem may respond with
+CMSS: 1 OK
(The transmission is successful. One SMS message is
sent.)
Note:
The
x
represents an index location.
Viewing a List of Stored Messages
1.
Type
AT+CMGL=x <press Enter>
where x can be:
REC UNREAD"
Shows received unread messages.
"REC READ"
Shows received read messages.
"STO UNSENT"
Shows stored unsent messages.
"STO SENT"
Shows stored sent messages.
"ALL"
Shows messages.
2.
The modem will respond AT+CMGL: 1,"REC UNREAD","8585551212",1...
3.
The modem will continue until all UNREAD messages, numbers, and index number are listed.
Reading a Stored Message
1.
Type
AT+CMGR=
x
<press Enter>
where x is an index location
2.
The modem may respond with +CMGR: "REC READ", "8585551212", ......
Deleting a Stored Message
1.
Type
AT+CMGD=
x,n
<press Enter>
where n can be:
0
Delete message at location <include the index number>
1
Delete all READ messages.
2
Delete all READ and SENT messages.