Secure communication tests carried out with next generation narrow band terminal in satellite and local area networks

Communication becomes more and more important day by day and especially secure communication from one end to the other holds a vital place in our daily life. Developed countries which are aware of this fact has started to carry out serious studies on secure communication from one end to the other. One of the most important studies is the project which appeared as FNBDT (Future Narrow Band Digital Terminal) at first and was renamed as SCIP (Secure Communication Interoperability Protocol) later on. FNBDT (Future Narrow Band Digital Terminal) or SCIP (Secure Communication Interoperability Protocol) is a communication protocol which is a result of secure communication need of diferent network devices in contact with each other. The main purpose of the protocol is to provide the new generation terminals which are source of transmission with secure communication with each other through different networks using narrow band. National and international studies on FNBDTISCIP has focused on three main points; FNBDT protocol, SCIP protocol and codes of MELP (Mixed Excitation Linear Prediction) Studies about implementation of FNBDTISCIP are much fewer than theoretical studies on the matter. Some tests of FNBDTISCIP on satellite and local Networks are carried out to overcome this lack of implementation. It is aimed to set up calls on diferent Networks, to check transmission of voice and data with and without any loss and to find out the limits with these tests. Results of these tests were declared before. In this study, some tests on satellite and local Networks are carried out; as a result, values about call set ups and limits of voice and data transmission are compared with ITU (International Telecommunications Union) standards.