New SITTI-ENAV Integrated Tower Product

At the World ATM Congress 2021 in Madrid, SITTI and ENAV Group are jointly announcing their new product Tower Integrated Information System (TIIS), a co-brand turn-key solution to integrate all systems and applications used in ATC Towers.

Come visit us at booth 562.

TIIS complete configuration is composed by:

  • ATC Console
  • TIIS Management Application
  • Tower Electronic Strip Bay
  • Tower Controller Working Position
  • Workstation for Flight Data Processing
  • Automatic Weather Observation System
  • Digital Automatic Terminal Information Service
  • Aeronautical Dynamic Data Management
  • Aeronautical Message Handling System
  • Voice Communication System
  • Audio/Video Recording and Playback System
  • Local and Remote Alarm Systems
  • Runway Lights
  • Ancillary equipment (Cameras, I/O devices)

Thanks to TIIS Management Application, all or part of the above systems can be supplied and integrated. Furthermore, its scalability and flexibility allow the integration of third-party legacy systems. Tower Integrated Information System is a hardware/ software solution for airports of any size or Remote Towers, which concentrates different data sources into one integrated product that reduces the number of objects on the controller working position desks. The ATC applications can be arranged in configurable desktops and layouts, each dealing with different management aspects, according to the Customer needs.


The Brazilian ANSP, CISCEA, launched a project for renewing the HF radio coverage over the Atlantic ocean by replacing obsolete radio devices installed in Recife, Belem and Rio de Janeiro and connecting the new ones to the Atlantic ACC VCS system. The radios will be initially connected to the CINDACTA3 technical room (in Recife) via TDM network. The project includes the possibility to be updated to operate through MPLS network.

The Recife VCS is in charge to grant automatic receiver and transmitter radio pairing, frequency tuning, squelch selection, SELCALL, ALE, etc. managing multi-site HF remote radio stations, each one configured with multiple transmitter and receiver equipment. The project includes the possibility of expanding the implemented architecture to allow interoperability with the military HF radio network.

The MULTIFONO® VCS systems by SITTI are natively capable of coping with the multi-site configuration required by this project, allowing radios at different sites to be connected to the VCS with complete control over communications, and by providing appropriate usage functions to operators. HF Multisite operation cannot use the VHF offset facilities. For this reason, and due to the HF audio signal characteristic, HF Best Signal Selection (BSS) requires advanced audio analysis algorithm to operate.

The wide experience acquired by SITTI in the Air Traffic Control field is once again put at the Customer disposal by exploiting SITTI integrated solutions to fulfil the needs of HF coverage over the ocean, thus contributing to the safety of all flights to and from Southern America.


The Brazilian Air Force is aiming at allowing the transmission of files and data over their existing HF radio network, not just limited to voice. This project, where SITTI is playing a key role, integrates itself with another project that is targeting the enhancement of the HF coverage of the oceanic region under Brazilian responsibility.

SITTI is providing gateway functions between external systems generating or requesting data files and the HF radios. This allows external third-party applications to access the military HF network and to send/receive data over it. SITTI is in charge of interfacing such applications and provide them with proper access to the network, according to customer requirements, over the INTRAER or ATN-BR networks.

Local and remote operators will be permitted to select the set of radios that best suit their mission and to dynamically associate such radios to external applications for data transmission/reception to/from aircrafts. This contributes to the optimisation of the usage of the entire system and network and improves their overall performance. Voice communications are of course always possible.

This project integrates the standard Radio Automatic Link Establishment features (ALE2G) to the data transmission, both in reception and transmission mode. When an incoming call is recognized the call is automatically answered and the best communication channel is automatically tuned to grant the best data transmission rate.

This project underlines the flexibility of SITTI systems. These in fact can provide features beyond just switching voice communication patterns, but also allowing the seamless integration of the management of new features, without compromising any of the other functions available to controllers.

Brussels, Belgium – January 30, 2017: Military pilots fly Spartan army carrier airplane during a flight to Brussels.


Continuing its expansion and progress in their modernization project, DGAC has installed a new VCS (Voice Communication System) at Concepcion. DGAC (Direccion General de Aeronautica Civil) is the Chilean ANSP (Air Navigation Service Provider) which SITTI has established an excellent relationship with, that allowed several other airport facilities to be equipped or upgraded with SITTI systems. These latter proved their reliability and capability of coping with local needs and requirements, as testified by the numerous installations in the country.

The international airport Carriel Sur of Concepcion is one of the largest airports in Chile, serving domestic and international flights, and also acting as an alternate airport for the main airport in the capital, Santiago del Chile. The number of connections to be managed at this airport is very significant and deserve a proper management to allow air traffic operators to have full access to all communication resources at any time.

The MULTIFONO® M800IP® solution offered by SITTI bases itself on our well proven architecture that makes it possible to avoid any single point of failure, thus guaranteeing an extremely high reliability and availability ratio.” – Pietro Lucioli, SITTI Program Manager, explains – “All active elements are connected to the duplicated high speed backbone LAN, in charge of distributing all messages and information to the system components.

Both E&M analogue and ED137 VoIP radios are connected to the VCS in main/standby mode, also providing Best Signal Selection (BSS) functions for the choice of the best received radio signal. At the same time, controllers can access more than 100 telephone lines (both analogue and SIP/IP). 8 brand new controller working positions (CWP) are envisaged; they are physically remote from the central unit, connected via duplicated optic fibre. GPS digital clocks and display units complete the system.

The new VCS has gone operative in March 2021, after deep testing and proper training of the controllers.


The Federal Aviation Administration (FAA) is conducting a significant Market Survey to define the acquisition strategy and validate future U.S. aviation communication systems’ requirements. As part of that campaign, the FAA has selected the best Voice Communication Switch suppliers worldwide to provide their COTS (Commercial Off-the-Shelf) systems.

SITTI is proud to be part of those.

SITTI MULTIFONO® M800IP® VCS system will be installed at the FAA William Hughes Technical Center in Atlantic City and be used by the FAA to perform market research for future voice switching procurements.

The system being provided by SITTI uses several radio and telephone connections, both analog and digital, to allow the FAA to simulate voice communications in support of execution of various operational scenarios. FAA users will be interfacing the system through 4 radio+telephone controller working positions.

This is a significant achievement for SITTI, in line with its strategy to invest strongly in the American market.  Furthermore, it is an excellent opportunity for SITTI to make the FAA and the major players in the Air Navigation field appreciate the qualities of its systems and services in terms of reliability and flexibility.

This further confirmation of our leading position in the VCS market provides us with the opportunity to broaden our supply and support to U.S. organizations and Federal Agencies that are working to replace and upgrade their current infrastructures with VoIP technology.


EUROCAE is the organization that deals with the definition of operational standards relating to air traffic management and control (ATM/ATC). In particular, its working group WG67 defines how to use the VOIP technology that is at the basis of ATC modern communications. Over time, this working group has assumed enormous importance in aeronautics worldwide, because it is the place where the technology that is being used throughout the world is defined.

SITTI has been a member of this working group since its foundation. SITTI proactively contributed to the outcomes of the working group, namely the international standards known as ED136, ED137 and ED138, all dealing with Voice Over IP in the field of air traffic control. SITTI has in particular been responsible for leading the subgroup responsible for the definition of the supervision of the elements in a VOIP network based on ED137.

At the latest WG67 meeting, SITTI decided to accept the role of secretary of the working group, in the person of Mr. Roberto Weger, thus further contributing to the results that this group is expected to achieve, given the new objectives set during such meeting. The ToR (Terms of Reference) for the group, overviewing the future activities to be executed in the coming years, are still to be approved by EUROCAE; the work done till now is not finished because large areas have to be taken into consideration for integration into ED137, one of all: security.

Thanks to the exceptionally good image and competence that SITTI has been able to offer and guarantee as a primary manufacturer of reliable systems worldwide, SITTI will continue providing its effective support to the group, leveraging on the large experience and expertise accumulated in the decades-long presence in the ATC market.


The Republic of Suriname is the smallest independent State in South America. The economic growth of the national economy and the need of enhancing the air connections infrastructure led to the search for a new Voice Communication System (VCS), capable of coping with the local needs, but already prepared for any possible future expansion. The new system is planned to be installed at the capital’s international airport, Johan Adolf Pengel International Airport.

SITTI has been chosen as the preferred supplier thanks to the high performance of its systems and the extremely good references that could be proven worldwide, and especially in South America. SITTI has therefore been awarded a contract for the provision of a new VCS system to the airport in the capital, Paramaribo close to the Atlantic Ocean coast.

The system being installed in Suriname includes a number of ED-137 VoIP interfaces capable of acting as managing both analogue and IP connections. More specifically, the MULTIFONO® M800IP® to Suriname has to deal with analogue/VoIP radio channels configured in automatic main/standby mode, plus analogue FXO/FXS telephone lines and SIP/IP telephone connections. All these communications facilities will be used by a significant number of local air traffic controllers that have access to all such features through an ergonomic and customizable touchscreen panel developed by SITTI.

The supplied systems has the native capability of being expanded seamlessly at any moment in time without affecting ongoing operations, including support for G.729 and dynamic delay compensation. FAT (Factory Acceptance Test) is expected to that place for next June, while SAT (Site Acceptance Test) by August 2020.

SITTI is a primary VCS manufacturer and supplier worldwide, capable of giving prompt and top edge solutions to Customer needs, both in the Civilian and Military fields. The leading edge, redundant, non-blocking architecture of the MULTIFONO® M800IP® provides flexibility and modularity for easy expansion and addition of further functionalities.


The Brazilian air space is subdivided into 4 areas, each of which managed by a dedicated Air Control Center (ACC), named CINDACTA, acronym for “Centro Integrado de Defesa Aérea e Controle de Tráfego Aéreo” (Integrated Air Traffic Control and Air Defense Center). With the objective of expanding and enhancing the remote AFIS applications provided by these centers, a significant number of stations will be provided with “MultiFunctional Terminals” developed by SITTI.

MultiFunctional Terminals allow operators to have simultaneous access to integrated communications to and from SITTI VCS (Voice Communication System) and any other third-party application. External applications that can be integrated are of any kind. In the case of the Brazilian remote AFIS service, the following ones have been selected, although further future expansion is possible: Audio Center, Electronic Strips, Meteo and Cameras. The installed applications run in parallel and present their information on a single monitor, thus reducing the amount of unnecessary hardware on the operator’s desk, therefore enhancing his situational awareness and working comfort.

Multifunctional Terminals, based on the MT800 Platform developed by SITTI, will be delivered to the following stations:

  1. CINDACTA 1: Barbacena
  2. CINDACTA 2: Corumbá
  3. CINDACTA 2: Uruguaiana
  4. CINDACTA 3: Fernando de Noronha
  5. CINDACTA 4: Oiapoque
  6. CINDACTA 4: Vilhena
  7. CINDACTA 4: São José da Cacheira
  8. CINDACTA 4: Tiriós
  9. CINDACTA 4: Guajará-mirim
  10. CINDACTA 4: Tabatinga

The wide experience acquired by SITTI in the Air Traffic Control field is put at the Customer disposal not only through unparalleled Voice Communication Systems (capable of interfacing any kind of analogue/digital/VoIP radio and telephone link), but also by offering integrated solution that can greatly enhance the way tasks are carried out by controllers. The MT800 platform used for the MultiFunctional Terminals subject of this supply is another step forward in understanding and capturing customer needs and in providing modern and highly integrated solutions.

SITTI at Rancagua (Chile)

Chile is a country where SITTI is already at home. In fact, SITTI has recently supplied the Voice Communication System (VCS) to cover the needs of the national air navigation service provider, the Dirección General de Aeronáutica Civil (e.g. The positive performance demonstrated by the recently supplied systems has paved the way for the expansion of SITTI’s presence in this South American country. SITTI has been awarded a new contract to supply a new VCS system at La Independencia Airport in Rancagua, located about 80 km south of the capital Santiago.

The system to be installed in Rancagua, although not a large system, includes a series of state-of-the-art interfaces with ED-137 VoIP support capable of acting as a gateway between analog and IP connections. The system will include radio channels that will increase the coverage and management of Santiago de Chile’s airspace, allowing, among other features, to manage the system remotely with security.

The system provided will be the M800IP® Multiphone since its modular and distributed architecture has the native capacity to expand seamlessly at any time over time without compromising ongoing operations. The implementation and operation of the system is part of numerous projects in South America that SITTI will complete by 2020.

SITTI is a leading manufacturer and supplier of VCS worldwide, capable of providing timely and state-of-the-art solutions to the Customer’s needs, both in the civil and military fields. The cutting-edge, redundant, non-blocking architecture of the MULTIFONO® M800IP® offers flexibility and modularity for easy expansion and the addition of more functionality.


Within the Brazilian national air force (FAB – Forza Aerea Brasileira), I C E A (Instituto de Controle do Espaço Aéreo) is the reference organization aimed at training human resources and conducting researches for the Brazilian Airspace Control System. Among the many activities carried out by ICEA, an important role is played by the provision of training to air traffic controllers that will be in charge of the correct and safe management of the steady increasing flow of aircrafts in the Brazilian skies.

ICEA is based in São José dos Campos and is already equipped with a SITTI Voice Communication System (VCS) simulator. This later is now going to be upgraded to include all training facilities to comply with the latest requirements set by the increasing usage of the IP technology in the Air Traffic Control (ATC) field. More specifically, instructors in São José dos Campos will be remotely connected to any compatible existing SITTI VCS in Brazil, therefore resulting in a much more cost effective training and reduced logistic requirements.

The upgrade process involves the VCS simulators at the LAB-SIM (Laboratorios de Simulação) and EOM (Escola de Operaçōes Militares) Audio Centers. In total, about 120 digital telephone connections will be managed by SITTI systems to allow a fruitful training at ICEA, where almost 180 controller working positions will be connected together; it is noteworthy to mention that about half of the positions are traditional ones installed into consoles, another the other half (95) is of the “stand-alone” type, i.e. they can be placed on any surface (desk).

SITTI is a primary VCS manufacturer and supplier worldwide, capable of giving prompt and top edge solutions to Customer needs, both in the Civilian and Military fields. The leading edge, redundant, non-blocking architecture of the MULTIFONO® M800IP® provides flexibility and modularity for easy expansion and addition of further functionalities.