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Underwater Acoustic Modem (SAM)


The Underwater Acoustic Modem (SAM) Project aims to develop underwater acoustic modem models for use in underwater sensor networks and underwater manned/unmanned vehicle technologies. Within the scope of the project, models for different usage types are being developed. The first type is the models with pressure resistant features and their transducers are located on the modem. The second type is the models that can be installed on surface or underwater platforms and their transducers are mounted on the platform.

The main features of SAM models are: JANUS Protocol compatibility, product types with different output powers (10W, 33W, 100W), communication capabilities with or without encryption. JANUS Protocol compatibility enables SAM models to be integrated with other underwater systems and provides the ability to exchange data in a compatible manner. Product types with different output powers provide flexibility to meet a variety of application requirements. Encrypted or non-encrypted communication options play an important role in ensuring communication security and data protection.

The Underwater Acoustic Modem (SAM) Project is an important step to improve the underwater communication infrastructure and increase the efficiency of underwater systems. The modem models developed in the project are designed to provide secure and fast data communication between devices used in underwater operations. This project contributes to Turkey's progress in gaining national talents and developing domestic technologies in the defense industry.

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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.