[Fahad Moiz]

Hey Steve,

Unfortunately after doing as you recommended, there is still only echoing of commands I send. The developer board only came with a micro USB cable not a DE9 serial cable. I am using the one I have from FTDI (CHIPI-X10). Settings in the serial monitor software (AccessPort) are:
Baud Rate: 115200
Parity Bit: None
Data Bit: 8
Stop Bit: 1
Flow Control: RTS/CTS(Hardware)

I have used the cable and the serial monitor for other devices and they work fine. In fact, they worked with the modem for the first two commands as well. However, now the modem just echos back whatever I send to it, even non AT commands do not respond with “ERROR.”

Do you think I need to re-flash the modem with its firmware?? If so where can I get that from?

Thank you for all your help.

Fahad

[Fahad Moiz]

Hi Steve,

Thank you for replying.

The commands I tried were: AT, AT+GMI, AT+GMM, AT+GMR, A/ and AT#/.

Initially I did receive reply for AT with an OK and AT+GMM with Telit. I remember typing commands incorrectly to which I received ERROR. In addition, last Friday I sent a few AT and left everything ON and went for lunch :). After returning I saw “NO CARRIER” so I sent another AT and received a reply of OK. Now I am not able to get that either. I can not duplicate any results.

For LEDs, at power up, PWR and D2 turn ON for a second, then D4, D5 and D8 turn ON. Then after a second D2, D4 and D8 turn OFF leaving PWR, D5 and D6 ON.

Then when I connect the serial cable to my PC, D7 and D3 do some blinking and turn OFF. Opening the COM port with terminal monitoring software turns ON D7 and D3 and they remain ON. When sending a command I see a very quick blink on D0 and D1.

The red COM LED keeps blinking.

On the Developer Board there are three SMA connectors for the antennae. The quick start guide says to “Determine which SMA connector you want to use for the antenna,” and does not specify, therefore, I am assuming it does not matter which two I use and that either can be “A” or “M.” Please correct me if I am wrong.

For the SIM card, does it have to be specifically for 3G as MTSMC-H5-.R2 is a 3G modem, or a 4G LTE SIM will work? The reason I ask is because now most carriers here (Canada) have LTE SIM and some also have NFC capability for mobile pay. I will have to request the carrier to provide me with 3G SIM if that is what is required. Please let me know.

Thank you for all your help.

Fahad

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