Chapter 3 – Using Your Wireless Modem

Using Short Message Services (SMS)

Send a Short Message to a Specified Number.

Type AT+CMGS="8585551212" <press Enter>

Then type your message: Please call me soon. <press ctrl Z>

The modem may respond with +CMGS:<mr> OK

Write a Message to Memory.

You can store a message to send it at a later date. Type AT+CMGW="8585551212" <press Enter> Type the message. <press ctrl Z>

The modem may respond with +CMGW: 4 OK (The message is stored in the index as message 4.)

Send a Message from Storage.

Type AT+CMSS=x,"8585551212" <press Enter>

The modem may respond with +CMSS: 1 OK (The transmission is successful. One SMS message is sent.)

Note: The x represents and index location.

View a List of Stored Messages. Type AT+CMGL=x <press Enter> For x, substitute one of the following:

"UREAD" Show all unread messages. "READ" Show all read messages. "USENT" Show all unsent messages. "SENT" Show all sent messages. "ALL" Show all d messages.

The modem will respond AT+CMGL: 1,"REC UNREAD","8585551212",1...

The modem will continue until all UNREAD messages, numbers, and index number are listed.

Read a Stored Message.

Type AT+CMGR=x <press Enter>

The modem may respond with +CMGR: "REC READ", "8585551212", ......

Note: The 1 stands for the number of the location to be read. The total number of locations depends on the amount of memory in your modem.

Note: The x represents and index location.

Delete a Stored Message.

Type AT+CMGD=x,n <press Enter>

For n, substitute one of the following: 0 Delete message at location <include the index number> 1 Delete all READ messages.

2 Delete all READ and SENT messages.

3 Delete all READ, SENT, and UNSENT messages.

4 Delete ALL messages.

The modem will respond OK.

Note: The x represents and index location.

Multi-Tech Systems, Inc. MultiModem CDMA Wireless Modem User Guide

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Multi-Tech Systems MTCBA-C manual Using Short Message Services SMS