Most common GPS protocols: Teltonika, Queclink, GT06 and JT/T 808
A high-level guide to the protocol families you will meet most often when running a GPS platform.
Teltonika (Codec 8, 8E, 16 and 12)
Teltonika is a Lithuanian manufacturer widely used in commercial fleets. Its devices use binary protocols: Codec 8 and 8 Extended for data and I/O, Codec 16 for events and Codec 12 for sending commands to the device.
Queclink
Queclink makes trackers for vehicles (GV series) and for assets and people (GL series). Its protocol is text-based, with messages starting with +RESP:GT, which makes debugging easier.
GT06 and compatible devices
GT06 is a compact binary protocol popularized by Concox (now Jimi IoT) and used by many low-cost trackers. There are many compatible devices of varying quality, so validate each model.
JT/T 808 and JT/T 1078
Chinese standards for vehicle terminals. JT/T 808 covers position and events; JT/T 1078 adds live video, common in cameras and MDVRs.
How to choose for your operation
For demanding commercial fleets, Teltonika is a common choice. For volume on a tight budget, GT06 devices. For assets and people, battery trackers such as Queclink's GL series. For video, JT/T 1078 devices. Check the TrackeraX catalog to confirm each model.