Teltonika devices are using Codec 8 or Codec 8 Extended for sending data to the server.
You may find the protocol documentation on this link : Codec - Wiki Knowledge Base | Teltonika GPS (teltonika-gps.com)
If you need further assistance kindly create a VIP Helpdesk ticket.
Please contact your sales manager. If you don't have any contacts with our Sale managers, please contact with them on our official website https://teltonika-gps.com/ 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 description of your situation to firstname.lastname@example.org When contacting Us, please provide: IMEI/Logs/Configuration file/Intenational GSM number/Firmware version/ect, please follow these recommendations: https://wiki.teltonika-gps.com/view/Recommendations_for_filling_a_query_description