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Coban - GPS303 Protocol

This page presents the public protocol context for using the Coban GPS303 tracker with the Plaspy platform. It explains how the device typically reports location and status information over mobile networks and how those communications interface with Plaspy for tracking, geo fencing, SOS alerts, and basic alarm reporting. The content focuses on compatible, non sensitive protocol details and practical connection guidance.

Plaspy uses shared connection settings across supported devices and automatically detects the tracker protocol when a device reports to the Plaspy endpoint. Exact protocol behavior for the GPS303 can vary by firmware version, hardware revision, and manufacturer implementation, so device behavior or supported features may differ between units and over time.

Protocol Overview​

The protocol used by the GPS303 is the mechanism by which the tracker identifies itself, sends GPS fixes and status data, and receives commands or configuration where supported. For integration with Plaspy, the protocol supplies the position, timestamp, device identifier, and event indicators needed for mapping and alerts.

  • Enables device identification and periodic or event driven position reports to the tracking server.
  • Transmits status events such as geo fence enter or exit, SOS activation, overspeed, movement, and battery alarms.
  • Carries the necessary location and time data that Plaspy uses to display positions and create activity history.
  • Supports both real time reporting and periodic automatic tracking depending on device configuration.
  • Works over standard mobile data channels so the tracker can report via internet to a centralized Plaspy endpoint.

How Plaspy Detects the Protocol​

Plaspy listens on a single, shared endpoint for incoming tracker data and automatically detects the tracker protocol when a device connects and begins reporting. This means that when a GPS303 is configured to report to Plaspy, no manual protocol selection inside Plaspy is normally required.

  • Plaspy accepts device reports at the public server domain d.plaspy.com for incoming connections.
  • The Plaspy server IP is 54.85.159.138 for cases where an IP is required in device configuration.
  • Plaspy uses port 8888 and all devices supported by Plaspy use the same port for reporting.
  • Devices may be configured to use either UDP or TCP to reach Plaspy depending on tracker capability and user preference.
  • When a properly configured GPS303 connects to the Plaspy endpoint, Plaspy inspects the incoming traffic and matches it to a known protocol profile automatically.

Transport and Connection Context​

Connection context describes how the physical transport carries protocol messages between the GPS303 and Plaspy. This section focuses on the transport layer choices you will commonly encounter when pointing a GPS303 at Plaspy.

  • The GPS303 may be configured to use UDP or TCP on port 8888 depending on device firmware and your configuration choices.
  • Devices can be set to report to the Plaspy domain d.plaspy.com or directly to the server IP 54.85.159.138.
  • Plaspy maintains the same listening port 8888 across all supported devices to simplify device setup and reduce configuration errors.
  • Choice of UDP versus TCP can affect delivery characteristics such as retransmission behavior and session state, so use the transport recommended for your firmware and network.
  • Ensure the device APN and GPRS settings are correct so the tracker can establish a data session and reach the Plaspy endpoint.

Protocol Compatibility Notes​

  • Firmware version differences can change which features or message options are available on a GPS303.
  • Hardware revisions and regional model variants can introduce minor protocol or transport differences.
  • Manufacturer configuration commands for reporting interval, transport, and server address are implemented at the device level and may vary by firmware.
  • Some advanced commands or responses may be optional and only present on certain firmware builds.
  • Confirm whether your deployment requires TCP or UDP and set the GPS303 accordingly.
  • Validate device identifiers such as IMEI or reported ID are correctly configured so Plaspy can associate reports with the right account.
  • Always cross check behavior against manufacturer documentation for the exact firmware installed on your unit.

Why Protocol Understanding Matters​

Understanding the communication protocol and connection context helps ensure reliable reporting, accurate location history, and straightforward troubleshooting when deploying GPS303 devices with Plaspy. Awareness of protocol behavior also improves configuration, alert tuning, and long term maintenance of a tracking deployment.

  • Helps identify why a device is not reporting and whether the issue is network, transport, or configuration related.
  • Enables correct selection of UDP or TCP and setting of the server address to match Plaspy expectations.
  • Improves the ability to interpret reported events like SOS, geofence triggers, or low battery alerts.
  • Supports consistent device provisioning so multiple units behave predictably in Plaspy.
  • Reduces time spent on common setup tasks by ensuring the device reports to the Plaspy endpoint from the start.

Why Use Plaspy with This Protocol​

Using the Coban GPS303 with Plaspy gives organizations a straightforward path to vehicle and asset visibility using a proven platform. The GPS303 provides real time and periodic tracking modes, geofencing, SOS alerts, and standard alarm types that map naturally into Plaspy for monitoring, alerting, and historical analysis. When devices are configured to report to Plaspy's endpoint at d.plaspy.com or 54.85.159.138 on port 8888, Plaspy automatically detects the protocol and begins processing incoming location and event data without manual protocol selection.

To learn more about Plaspy and how it handles device communications, visit https://www.plaspy.com. For the most current and device specific protocol details, firmware notes, and command references, please verify information with the manufacturer at https://www.coban.net/ since protocol support and firmware behavior can change over time.

Tracker Communication

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