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MİLGEM 3-4 Message Operating System (MİLGEM 3-4 MİS)


The purpose of the MİLGEM 3-4 Message Operating System Project is to develop the Message Operating System (MİS), which will be deployed on the MİLGEM 3rd and 4th Ships to be built by the Naval Forces Command within the framework of the MİLGEM Project, and which has the ability to display, store and print formatted messages from the Communication System, a subsystem of the MİLGEM Combat System. In addition to hardware products such as Synchronous Serial Channel Switching Device, Mechanical Switch Device and Energy Distribution Unit, ACP 127 Software Package, STANAG 5066 Protocol Software, STANAG 5066 Application Software, Data Backup Software and X.400 Messaging System are being developed.

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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.