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Real Time Operating System (GIS) Adaptation Projects


GIS has been developed with the aim of developing the Safety Critical Strict Real Time Operating System, which is an important step in the roadmap, with the aim of fully developing the avionics system design and integration capability, which are among the critical technologies, nationally. With this project; Ending the foreign dependency of especially safety-critical system projects in line with national needs, providing a scalable and sustainable safety-critical embedded software development platform with the flexibility to rapidly meet the needs of domestic needs, and creating a system that will be preferred for civilian embedded system applications thanks to its reducible features. targeted. In this roadmap, which it set out on, the projects that have completed and continue integration with GIS are shown.

Developed in accordance with DO-178C Level-A processes, the operating system can be run as multi-core or single-core, in ARINC-653 mode that provides safety critical application interfaces, or in POSIX mode at PSE-53 operating level if desired. Development environment activities such as configuring the operating system by selecting the operating modes, application development, debugging, event analysis, simulation can be done through the Integrated Development Environment (TGO) developed on the Eclipse platform. Developed in accordance with DO-178C Level-A processes, the Real-Time Operating System is designed in a modular structure to operate on different microprocessor families and different single-board computers. With the provided ASP (Architectural Support Package) and BSP (Card Support Package) layers, the hardware family it supports is available for expansion.

ARINC-653 and POSIX interface compatibility have been tested with test environments developed separately, and the operating system, which has passed these tests successfully, has also proven its compliance with standards in this regard by communicating with other single board computers running on different operating systems. Other operating systems developed using these interfaces provide convenience in the transition to the integrated national real-time operating system. GIS, which is of critical importance in terms of preventing the export of critical data with the national operating system in confidential projects, enabling full nationalization in embedded platforms, supporting the internationally competitive industry sector thanks to reduced costs, and the formation of new SMEs, helps Turkey to reduce its foreign dependency in this field. plays an important role in reducing


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MILSEC 4 - Secure IP Terminal


While the MİLSEC-4 terminal offers an up-to-date solution for next-generation secure communication (voice, data and video) in IP networks, it provides an uninterrupted communication service by maintaining the compatibility of secure voice communication in PSTN networks with PSTN secure phones in use.

Configuration, surveillance and software update processes of MILSEC-4 terminals are carried out securely remotely using the Security Management Center (GYM). MİLSEC-4 terminal is capable of IP Network Key Loading (IPAAY) through secure communication with GYM without the need for an additional device.

MİLSEC-4 terminals are interoperable with MİLSEC-1A and MİLSEC-2 phones and offer the opportunity to replace MİLSEC-1A and MİLSEC-2 phones without interruption in the gradual transformation of PSTN networks to next generation IP networks.


  • End-to-end secure voice communication in PSTN networks
  • End-to-end secure voice, image and data transmission in IP networks
  • NATO SCIP compliance on IP networks
  • Compatibility with commercial SIP products
  • Interoperability with MILSEC1A and MILSEC2 secure phones
  • National and AES crypto algorithms
  • Remote software update
  • Easy operation with touch screen

It is subject to the sales license to be given by the Ministry of National Defense.