Sternula MMS Proxy

The world's first MMS Edge router

The Sternula MMS Proxy stands as the pioneer shipside MMS Edge router, encased in robust hardware designed according to the latest MCC MMS DRAFT specification and IALA GUIDELINE G1117.

Sternula MMS Proxy directs maritime communications to exchange data and messages between authorized maritime stakeholders (maritime administration, port management, ship crew, captains, pilots, personal equipment, services, etc.) in an efficient, reliable, and seamless manner. 

The MMS Proxy allows any means of communication system, like AIS 2.0 (VDES, VHF Data Exchange System), 4G, and other satellite communication systems, to transfer data into the ship bridge equipment through it.


Maritime Messaging Service

Maritime Messaging Service (MMS), as defined in IALA guideline G1117, is a messaging component that allows authorized maritime stakeholders to send and receive messages in an efficient, reliable, and seamless manner within the Maritime Connectivity Platform (MCP). MMS solves problems of the current maritime wireless data communication system.

The Sternula MMS Proxy enables the transfer of digital “messages”, i.e., arbitrary digital data, organized in a predefined known way to be used by digital applications. The Sternula MMS Proxy provides a non-synchronous data exchange, that can be realized over varying, intermittent, and diverse digital connectivity. The Sternula MMS Proxy supports both secure IP-based transport through internet connectivity and through VDE-TER and VDE-SAT connections. As a result, it addresses the need for secure transportation of trusted services and private communication among maritime stakeholders who have  AIS 2.0 (VDES) or IP connectivity. Sternula MMS Proxy software is compatible with 4G, AIS, AIS 2.0 (VDES), and VSAT technology ensuring the exchange of secure maritime communication. 


  • Improves e-Navigation services
  • Designed to meet new advanced communication modes as defined by ITU-RM.2092-1D
  • Designed to meet IALA requirements, as defined in IALA G1117
  • Meets SOLAS IV & V carriage requirements for AIS

Sternula MMS Proxy allows all maritime stakeholders (maritime authority, maritime administration, port administration, shipping company, and vessel owner)  to create own applications based on preferred software or platform to get the maximum benefit in exchanging the needed data.

  • weather forecasts
  • ice charts
  • change of routes
  • virtual AtoN
  • engine monitoring
  • etc…
An example of how Sternula’s MMS Proxy is used in combination with the AIS 2.0 (VDES) connectivity:
How does MMS Proxy work

The Sternula MMS Proxy functionality may be external to ship communication equipment in order to independently decide which communication means is the best type for the type of application, data, size, and priority under the current connectivity conditions on the ship and in the area. 

By using the Sternula MMS Proxy,  the data or message can be delivered faster and more confidential through the AIS 2.0 (VDES) satellite when ships are at sea, or via Sternula 4G Above Deck Unit when the ships are near shores, by using the mobile network.

The Sternula MMS Proxy is recommended to be used together with the Sternula 4G Above Deck Unit, as the mms proxy can be connected through 4g or satellite network

If you have any question regarding our products and services, visit our FAQ page.