Developing firmware for AT-based GSM/GPS modules is a big bottleneck for software development due to the many problems intrinsic to AT-based programming style and the many challenges in dealing with manufacturer specific AT command set. ATCommander is a full-featured desktop app for easily controlling GSM/GPS modules with AT commands.

How To Test A GSM Modem Manually Before you begin testing your GSM modem: – Connect the modem to Device ManageR’s host system. – Install the most recent version of the modem’s drivers, which will ensure the host system is able to connect properly to the modem.

The drivers should be available from the manufacturer. – Determine the COM port that your modem is connected to.

This FAQ shows you how:. Manually send an SMS text message Now that you have confirmed the COM port, you may attempt to manually send an SMS message using PuTTY or another serial connection tool. In our example, we’re using PuTTY. Select Session in the navigation bar to the left.

In Connection type, select Serial. In Serial line, enter the COM port your modem is connected to.

In Speed, enter the maximum port speed (baud rate) of your modem. In our example, the COM port is COM12, and the speed is 115200. Then select Open at the bottom of the screen to open the connection to the modem. The window shown below will appear; you may now type commands to the modem. Now attempt to send a text message by entering the commands below in order, one line at a time. In the commands below: – Replace ~C with pressing the Enter key on your keyboard.

– Replace ^Z with pressing Ctrl+Z on your keyboard. – Replace [SERVICE] with your GSM service center number. – Replace [PHONE] with number you want to send a text to. (If you’re outside the U.S., you may need to place a ‘+’ sign before the phone number.) – Replace [ALARM_TEXT] with a text message. In our example, our text message is “hello from putty.” Commands: AT+CMGF=1~C AT+CSCA=”+[SERVICE]”~C AT+CMGS=”[PHONE]”~C [ALARM_TEXT]^Z~C If these commands are successful, your screen will appear as shown below, and you’ll receive the text message on the target phone number. Further troubleshooting First, verify your modem supports SMS text mode. SMS text mode is the only mode currently supported by Device ManageR.

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To verify that your modem supports it, enter the command below. If SMS text mode is available, you’ll see a 1, as in the response ‘+CMGF: (0,1).’ AT+CMGF=? Then verify your SIM card is unlocked. Bcad mebelj pro 310 torrent download. Next, ensure you’ve inserted a SIM card into the modem that has been unlocked and is tied to an activated data plan with a phone service provider. Enter this command to verify that the SIM card is unlocked. It should respond with ‘+CPIN: READY.’ AT+CPIN? Finally, verify the correct band setting is configured.

Once the SIM card is verified, ensure the proper band setting is being used to connect to the SMS service center. Enter the command below to verify what the modem is currently set to. +WMBS: 4,0 The below commands will cause the modem to respond with the available band settings for this modem. Sierra Wireless GL6110 band settings These are the available band settings for a Sierra Wireless GL6110 modem. +WMBS: 0,x Mono band mode 850MHz is selected +WMBS: 1,x Mono band mode extended 900MHz is selected +WMBS: 2,x Mono band mode 1800MHz is selected +WMBS: 3,x Mono band mode 1900MHz is selected +WMBS: 4,x Dual band mode 850/1900MHz are selected +WMBS: 5,x Dual band mode extended 900MHz/1800MHz are selected +WMBS: 6,x Dual band mode extended 900MHz/1900MHz are selected If you do not have a Sierra Wireless GL6110 modem, please review the documentation provided with your modem to verify which setting indicates which band setting.

To change the current band setting, you may use these commands: To set the modem to the dual band 850/1900MHz (North America & U.S.) AT+WMBS=4 AT+CFUN=1 To set the modem to the dual band 900/1800MHz (UK and most countries outside of North America) AT+WMBS=5 AT+CFUN=1.