When a disaster strikes a building, the only thing that ensures the safety of people inside is their seamless communication with people outside such as first responders. Without knowing the situation of a building from inside, first responders, including firemen and police officers, cannot take necessary actions with accuracy. During the tragedy of 9/11, firefighters and police officers were not able to communicate properly inside the World Trade Center due to disrupted communication channels which led to so many casualties. Since then, NFPA and IFC fire codes made it mandatory for every building to have an enhanced communication system utilizing Public Safety DAS (Distributed Antenna Systems). This is the reason that Solutiant now provides top-notch Public Safety Bi-Directional Amplifier (BDA) DAS and Indoor Cellular DAS systems.