Configuring Device As Udp Listener To Accept Udp Client Connections - Multitech MTC-MAT1-B01 User Manual

CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
The device responds with OK. The device can now send or receive data without entering additional
commands.
Closing the Socket and the Connection
To close the socket:
1. Enter the escape sequence:
+++
2. To close Socket 1, enter:
AT#SH=1
The device responds with OK.
To close the data connection:
Enter:
AT#SGACT=3,1
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.
Enter:
Should return:
AT+CEREG? 0,1
OK
3. Configure socket parameters
Enter:
AT#SCFG=1,3,300,240,600,50
4. Activate context one
Enter:
AT#SGACT=3,1
5. Set firewall rule to accept connections:
AT#FRWL=1,"###.##.###.#","###.##.###.#"
where ###.##.###.# represents the IP range. For example:
AT#FRWL=1,"204.26.122.1","204.26.122.255"
6. Set connection ID 1 for UDP listening mode on port 7000.
Enter:
AT#SLUDP=1,1,7000
The device responds with and unsolicited indication that a host is trying to connect to connection ID 1 on
port 7000.
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MultiConnect Cell MTC Cat M1 User Guide