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22 terms you will see on any product page, integration or conversation with your installer. Short definitions, no generic redefinitions: if you already know what GPS is, this is what sits underneath.
Automatic Vehicle Location. In the Teltonika world, AVL describes the full logic: GNSS + modem + event logic + send protocol to the server. When you see "AVL ID" in the documentation, it refers to the numeric identifier of each reportable parameter (e.g. AVL ID 239 = ignition).
Advanced Driver Assistance Systems. Vision-based driving aids: forward collision alert, unintended lane departure, safe distance. In the catalog you will find it as the Teltonika ADAS camera, integrated with the tracker via RS232 or Bluetooth.
Internal inertial sensors of the tracker. They detect harsh acceleration, hard braking, turns and crashes. They are the basis of eco-driving and crash-detection events. All modern FMC/FMB units include them as standard.
Controller Area Network. Internal serial communication bus of the vehicle (engine, ABS, BCM). Reading it gives you RPM, fuel consumption, real odometer, fuel level and door states without extra sensors. It is read with modules like CAN-CONTROL or devices with native CAN such as the FMC150.
Low-energy Bluetooth 4.0+. In Teltonika it is used to pair external sensors: temperature probes, asset-identification beacons, fuel pulse readers.
Binary formats the tracker uses to pack data before sending it to the server. Codec 8 is the basic one; 8 Extended adds 2-byte IDs (more AVL IDs available); 16 adds a record-generation timestamp on top of the send one. Details at Codec 8/8E/16 protocols.
Low-power 4G LTE variants. Cat M1 keeps voice and handover; NB-IoT does not. Most Teltonika FMC units are LTE Cat 1, not Cat M1: be careful when comparing with pure IoT trackers.
Digital Input / Digital Output. Inputs read binary states (ignition, door, panic button). Outputs drive external relays: engine cut-off, siren, hazards. A Teltonika DOUT is open collector: it needs a relay to switch real power.
Diagnostic Trouble Codes. Vehicle fault codes read via OBD II or J1939. Devices such as the FMC003 report them automatically.
Driving analysis based on accelerometer events: harsh acceleration, hard braking, aggressive cornering. It does not measure "style" in the abstract; it measures specific events above configurable thresholds (mg / m/s²).
Remote firmware and configuration update for the tracker without touching it physically. Essential when you manage more than 50 units. It runs on the Teltonika FOTA Web platform.
Ability of a 4G device to drop to 2G when it loses LTE coverage. Useful until 2G is permanently switched off in Spain (planned 2027–2030 depending on carrier). After the shutdown, fallback no longer makes sense.
Virtual polygon or circle on the map. The tracker fires an event on entry or exit. Up to 50 geofences per device are configured on the usual FMC models.
Global Navigation Satellite System. The correct term: "GPS" is one specific constellation (the American one). GNSS covers GPS + GLONASS + Galileo + BeiDou. Modern Teltonika devices read all four simultaneously.
Contact key with a unique number, used for driver identification. It connects to the tracker via 1-Wire (a single cable + ground). De facto standard in delivery fleets.
IEC 60529 protection ratings. IP67: 1 m immersion for 30 min. IP68: continuous immersion at specified depth. IP69K: high-pressure, high-temperature water jets (industrial washes). For heavy machinery, do not go below IP67 (FMC234); for pressure washes, IP69K (FTC880).
CAN-based protocol for trucks, buses and heavy machinery (SAE). Read by devices such as the FMC650: real fuel consumption, RPM, kilometres, engine temperature, AdBlue levels.
Industrial serial ports. RS232 is point-to-point (one peripheral). RS485 is a differential bus: you chain multiple sensors. For LLS fuel probes or professional RFID readers, RS485 is used. Available on the FMC125.
Radio Frequency Identification. Used for driver identification (an alternative to iButton) and asset control in warehouse/site.
Legal driving-time recorder for vehicles >3.5 t. Teltonika devices read it via the K-Line port or via remote DDD download (Digital Data Download). The FMC650 is designed for this.
Protocols for sending the codec to the server. TCP acknowledges delivery (more reliable, more traffic); UDP does not (less traffic, ideal for large fleets with a solid server). Configurable per device.
Yes, Teltonika publishes the list in its wiki by model. If you need the document to integrate your own server, request it at info@trackiber.es stating the exact model.
8 Extended uses 2-byte IDs, which allows more than 256 distinct parameters. For any new integration, use 8E or 16 directly.
Not reliably. IP67 guarantees immersion, not high-pressure, high-temperature jets. For industrial washing you need IP69K.
Teltonika never includes a SIM. You choose it: M2M from a local carrier, industrial eSIM or a regular SIM with an open APN.