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Hello there, I hope you are doing very well. I would like to align you with the problem that I'm facing for several days and trying to get a proper solution.
I've node server configured with TCP protocol with device FMB920. Initially, the device sends an IMEI number and waits for a response then it has to choose either it should send data or not in case if the response is 01.
So the problem that I'm facing is I'm unable to send 01 response after getting an IMEI number.
I've tried different methods and techniques, didn't work. So kindly help me get rid of it.

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Hello there,

Good day. Thank you for your question.

Please go through our Data Sending Protocols, here -

If you are still facing the same issue, please reach out to us via VIP Helpdesk or contact your Sales Manager. If you don't have any contacts with our Sales managers, please contact them on our official website and click on the "Contact Us" button. When you will click, please fill the form and submit it.

Note: as a topic, please choose "Vehicle telematics" or you can send an e-mail with the description of your situation to

Thank you for your understanding.

Kind regards.