Multi-Tech Systems MTD-EVe Checking Network Registration, Reading, Writing, and Deleting Messages

BASIC OPERATIONS

Note: Signal strength of 10 or higher is needed for successful packet data sessions.

Example

A example response to AT+CSQ:

+CSQ: 15,1

Checking Network Registration

Before establishing a packet data connection, verify the is device registered on the network. To do this enter the network registration report read command:

AT+CREG?

If the device returns:

+CREG: 0,1

The device is registered.

If the device returns:

+CREG: 0,2

The device is in a network searching state.

Reading, Writing, and Deleting Messages

Reading Text Messages

To read a text message in text mode:

1.Put the device in text mode. Enter: AT+CMGF=1

2.Read message. Enter: AT+CMGR=1

Example response:

+CMGR: "REC UNREAD","+16155554562z`z","","13/09/05,13:39:40-20" How are you?

OK

Sending Text Messages

To send a text message in text mode:

1.Put the device in text mode. Enter:

AT+CMGF=1

The device responds.

OK

2.Enter the recipient's number and your message.

16 QuickCarrierTM USB-D EV-DO MTD-EV3 User Guide