User Manual

Before accessing the Short Message Service, the device has to be properly set up.

The HE910V2 family supports SMS in two different formats:

 PDU

 Text

The difference is that in the PDU mode the device returns and receives SMS encoded in the

format ready to be sent to the network; in TEXT mode the device converts automatically the

read PDU into text and vice versa. By using TEXT mode, the PDU data encoding knowledge

is not needed and operations are easier. For this reason, we are using the TEXT mode to

explain how to operate with SMS. If you are familiar with PDU encoding then you can

operate with PDU by selecting that format and using appropriate command syntax.

 Send command AT+CMGF=<mode><cr>

Where:

<mode> is the SMS format type:

0 - PDU

1 - Text

 wait for response OK

This setting is stored and remains until the device is turned off. Hence, there is no need to

issue it more than one time. For TEXT mode use <mode>=1.

For example:

1- Let us assume you want to set TEXT format for the SMS:

command

AT+CMGF=1<cr>

response:

The SMS are sent by the HE910V2 family to a service center (SMSC) where the message is

dispatched towards its final destination or is kept until the delivery is possible. To ensure a

correct behavior of this service the number of the service center must be the one your network

operator supports.

To check which number is stored as the SMSC: