I want to access directly to each manufacturer API just like trackunit does, I dont want to pass over AEMP.org API nor pay their membership.
It suppose that each manufacturer platform conforms to the ISO/TS 15143-3:2016 standart or I get it wrong?
No, you're wrong. The communication protocol of tracking device and server of manufacturer it's not the same as API to get data from the server via API.
API (like AEMP) is just some type of sharing data from manufacturer's server like getting data from Wialon wia SDK or Retranslator.
We don't know heavy mashines/trucks manufacturers who shares the protocol of their embedded tracking devices.
If you find some well-known manufacturer (like Volvo, Cat, John Deere, etc.) who is ready to share the communication protocol between embedded tracking device and platform please notify firstname.lastname@example.org We'll implement it in Wialon ASAP.
Yes you are right but it seems that some access are very low
According to our experience, monthly fee of such platforms much more than Wialon or other third-part platforms (from hundreeds to thousands dollars per unit per year). For example, one of the agricultural manufacturer's fee is 300-700 Euro per unit per year (depending on the quantity of parameters).
Also the data quality of such system (GPS points quantity, fuel level accuracy, etc) is MUCH lower than using third-part tracking devices with LLS and Wialon.