32 devices 2 brands

GPS103 Protocol (Coban TK103 family)

ASCII TCP protocol designed by Coban Electronics for the GPS103 / TK103 / TK303 family · the oldest and simplest budget-tier wire format still in production. Used by Coban and dozens of OEM rebrands.

Positions go to this server

gps.traxelio.com:5001 TCP
I already have a tracker

Connect your tracker

Enter your tracker IMEI to see whether Traxelio recognizes the model before you start setup.

On Traxelio

What GPS103 trackers do once they are on Traxelio

Geo-Zones

Geo-Zones

Get alerted when vehicles cross boundaries
Driving Behaviors

Driving Behaviors

Premium

Driver scoring software to reduce accidents and insurance costs
Predictive Maintenance

Predictive Maintenance

Premium

Automated maintenance scheduling that prevents breakdowns
Trip History

Trip History

Every trip recorded, every dispute settled
Immobilizer request for compatible installations

Immobilizer request for compatible installations

Immobilizer requests for compatible installations
View All Features

Hardware that speaks this protocol

Devices that speak GPS103

Coban
Verified

Coban GPS303

Coban
Coban

306A

Coban
Coban

A306

Coban
Coban

COBAN 303HI

Coban
Coban

COBAN 311

Coban
Coban

COBAN CB-900A

Coban
Coban

COBAN CB900

Coban
Coban

Coban GPS105

Coban
Coban

Coban GPS106

Coban
Coban

Coban GPS107

Coban
Coban

Coban GPS301

Coban
Coban

Coban GPS302

Coban

Who ships hardware on this wire

Brands using GPS103

Coban

Coban

26 devices

TKStar

6 devices

Point this protocol at Traxelio

Point GPS103 at Traxelio

  1. 1

    Insert SIM with data plan + airtime

    Test the SIM in a phone first · GPS103 devices have no UI to surface APN failures, so a dead SIM looks identical to a working one.

  2. 2

    Set the APN

    Send apn123456 your_carrier_apn to the device's SIM. APN must be set BEFORE the device tries to open a data session.

  3. 3

    Point the device at your server

    Send adminip123456 your-server.com 5001 to register the destination. Coban's reference port is 9001 and Traccar's is 5001 · use whatever your platform listens on.

  4. 4

    Enable GPRS reporting

    Send gprs123456 to enable the data session. Then fix030s***n123456 to report a position every 30s when moving.

  5. 5

    Change the default password

    Send password123456 NEWPASS to replace the factory 123456. Without this, anyone with the SIM phone number can re-point the device.

gps.traxelio.com:5001 TCP

Replace {password} with the tracker PIN or password.

Coban GPS103

Guided setup available

306A A306 COBAN 303HI COBAN 311

Authenticate

begin{password}

Enable upload

up{password}

Switch to tracker mode

tracker{password}

Enable GPRS

gprs{password}

Set fix interval

fix010s015m***n{password}

Set heading delta

angle{password} 010

APN commands depend on the carrier SIM in your tracker, so they are not shown here.

What Traxelio surfaces from these packets

GPS103 fields Traxelio reads

  • GPS Location
  • Speed
  • Altitude
  • Heading / Direction
  • Street Address
  • GPS Accuracy
  • Ignition Status
  • Odometer / Mileage
  • Engine Hours
  • Battery Level

Still offline after GPS lock

GPS103 still not landing

Device sends a single login packet then goes silent

Most common cause: server didn't reply LOAD (case-sensitive). The Coban firmware closes the TCP connection if it doesn't get the exact acknowledgement string within ~5 seconds. Confirm Traxelio's ingestor is sending LOAD\r\n. Less common: device firmware is too old and uses a different login format · capture the raw packet to see.

These symptoms are answered outside this section:

FAQ

GPS103 leftover questions

Can I run a GPS103 device alongside a Concox GT06 device on the same fleet?

Yes. They are different protocols but Traxelio decodes both. A mixed fleet (some Concox, some Coban) is common in budget-tier deployments · the dashboard sees them as the same kind of GPS event, the per-device protocol just changes how we parse the wire.

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