Thank you for your question,
Could you confirm that you successfully receive all the data from single packet, then device stop communicating and never sends information again?
If this not the case would you mind checking your min.period/send.period parameters (Moving/On Stop) in the configuration. These parameters are found in Data Acquisition section. Send.period describes how often packets should be sent to server and min.period how often AVL packet are acquired.
More info on this can be found in our wiki:
We hope this helps, if you have further questions please respond here.
Regards, Teltonika Support.