Simultaneous interpreting systems are used during meetings, conferences or exhibitions which require interpretation in real time manner and/or involving more than one language simultaneously. Multi-national corporations (MNCs), international conferences, court hearings and training are some examples of functions which require interpreting systems to be used. Simultaneous interpreting systems may refer to simple systems like the portable tour guide system which can be easily contained in a briefcase and require minimal technical support, or complicated systems such as a 32 digital system installed in a large conference hall.