Multitech GFU19 User's Guide download pdf (Page 19)

CONFIGURING AND COMMUNICATING WITH YOUR DEVICE

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.

Sending and Receiving Data

Connecting Device to TCP Server as TCP Client

1. Bring up Data Connection Using Internal IP stack

Enter:

AT#SGACT=1,1

The device responds with the IP Address the cellular provider assigned to the device on connection,

followed by OK. For example:

#SGACT: 25.194.185.116

Closing the Socket and the Connection

To close the socket:

■ Enter the escape sequence:+++

■ To close Socket 1, enter: AT#SH=1

The device responds with OK.

To close the data connection:

■ Enter: AT#SGACT=1,0

The device responds with OK.

Configuring Device as UDP Listener to Accept UDP Client Connections

To configure the device as a UDP client:

1. Check signal strength.

Enter:

AT+CSQ

2. Verify device is registered on the cellular network.

MultiConnect

Cell 100 Series MTC-EV3 User Guide 19

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Multitech GFU19 User's Guide Page 19