AFTN/AMHS system allows to transmit and exchange data between all parties involved in use and management of airspace. It also allows to provide data in the most simplest way (AFTN) as well as to provide more complex data services to more demanding users (AMHS). It is absolutely necessary to have ability of data exchange with Network Manager, based on services available on NM side (EDS). In parallel, due to improve safety level, it is needed to prepare upgrade of AFTN/AMHS system taking into account contingency scenario. After such modification, even in contingency mode, all required services will be provided to the system clients, without degradation of data quality and accuracy. Such upgrade will also include requirements related with increasing from year to year data amount. Upgrade of Communication System, related with introduction new functionalities required by AF 5.3.1 and AF 5.4.1. It will support information exchange in areas mentioned in both AFs. This upgrade will allow also to achieve required security level. Such solution will be in line with AF 5.1.3 and, a s a result, allow to integrate with security infrastructure provided by other components of infrastructure. Cooperation with Military Stakeholder (Military Air Traffic Service Office of the Polish Armed Forces) in this particular will increase project efficiency and multiply project benefits.