CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
MultiConnect
®
Cell MTC-G3 User Guide
29
Exit Data Mode and Close Connection
To exit data mode and 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.
If using a SIM card, configure the APN.
Enter:
AT+CGDCONT=1,"IP","XXX.APN.com"
where XXX.APN.com is the APN your cellular provider assigned to your SIM card.
3.
Verify device is registered on the cellular network.
Enter:
AT+CREG?
Should return:
4.
Configure socket parameters
Enter:
AT#SCFG=1,1,300,240,600,50
5.
Activate context one
Enter:
AT#SGACT=1,1
6.
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"
7.
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.
SRING: 1
