Network Registration & Ping Test

Once the hardware is communicating via USB, the next step is to ensure the modem can successfully attach to the cellular network and reach the internet. We will do this entirely using AT commands.

1. Set the APN (Access Point Name)

Before the module can connect, it needs to know the APN of your SIM provider (e.g., Sixfab SIM, Twilio, Hologram, or a local carrier).

AT+CGDCONT=1,"IP","your_apn_here"

e.g with Sixfab SIM card it will be AT+CGDCONT=1,"IP","super"

2. Verify Network Attachment

Now, check if the module has successfully negotiated with the cell tower. (This can take anywhere from 10 seconds to 3 minutes on a cold boot).

AT+CEREG?

**Expected Response: **+CEREG: 0,1 (Home Network) or+CEREG: 0,5(Roaming). (If it returns 0,2, it is still actively searching. Wait 30 seconds and try again).

Force the Network Technology to Cat M1

Since Cat M1/NB-IoT networks are not universally deployed, modules can sometimes waste time scanning unsupported bands or technologies. You can force the Telit ME910C1-WW to look specifically for LTE Cat M1.

AT#WS46=0

It restricts the module to LTE CAT M1 only

Refer to the Telit AT Command guide for your specific firmware's exact RAT values and details.

3. Activate the Internal IP Stack

Once the network registration is successful, you can check if it can send data. This can be done with ping test.

To run a ping test directly from the modem, we need to activate the Telit module's internal PDP context.

AT#SGACT=1,1

4. Execute the Ping Test

Now, ping a reliable public DNS server (like Google's 8.8.8.8) using the module's built-in ping command.

AT#PING="8.8.8.8"

Example Response:

#PING: 01,"8.8.8.8",6,50
#PING: 02,"8.8.8.8",5,50
#PING: 03,"8.8.8.8",6,50
#PING: 04,"8.8.8.8",5,50
OK

If your ping test returned successful packet times, your hardware, SIM, and cellular network are 100% verified and online. You have successfully proven that the Telit module can reach the broader internet.