Example; Checking Network Registration; Sending And Receiving Data; Connecting Device To Tcp Server As Tcp Client - Multitech MultiConnect MTC-L4G2D User Manual

CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
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Note: Signal strength of 10 or higher is needed for successful packet data sessions.

Example

A example response to AT+CSQ:
+CSQ: 15,1

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+CEREG?
If the device returns:
AT+CEREG?: 0,1
or
AT+CEREG?: 0,5
The device is registered.
If the device returns:
AT+CEREG?: 0,2
The device is in a network searching state.

Sending and Receiving Data

Connecting Device to TCP Server as TCP Client

1.
AT+CGDCONT=1,"IPV4V6","apnname"
where apnname is the APN your cellular provider assigned to your SIM card.
2. Reset the radio module
Enter:
AT+CFUN=1,1
OK
3. Bring up Data Connection Using Internal IP stack
Enter:
Verizon:
AT#SGACT=3,1
Other Networks:
26
-17 to -16
-19 to -18
Not known or not detectable
®
MultiConnect Cell MTC-L4G2D User Guide