CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
MultiConnect
®
MicroCell MTCM-LAT3 and -LSP3 User Guide
21
The device is registered.
If the device returns:
+CEREG: 0,2
The device is in a network searching state.
If the device returns:
+CEREG: 0,3
The registration is denied.
If the device returns:
+CEREG: 0,0
The device is not currently attempting to register to a network.
Sending and Receiving Data
Connecting Device to TCP Server as TCP Client
To send data through a connect socket:
1.
Define PDP Content (APN for SIM)
Enter
AT+CGDCONT=1,"IPV4V6","APN_NAME"
where APN_NAME is the APN your cellular provider assigned to your SIM card.
The device responds with OK
2.
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
OK
3.
Create Client Connection to TCP Server on Port 500
Enter:
AT#SD=1,0,500,"###.##.###.##"
where ###.##.###.## is the TCP server IP Address.
The device responds with OK. The device can send or receive data now 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: