CA Conditional Access
CI Common Interface
DVB is the standard of wish the broadcast is transmitted.
CA is the card that encodes the signal.
CI/CI+ is the interface where the CA-card is connected.
DVB-T can be either MPEG-2 or MPEG-4.
DVB-T2 is always MPEG-4 and has a higher bandwidth then DVB-T to support high bandwidth (=quality)
DVB-C is similar but for cable TV
DVB-S and DVB-S2 is for satellite broadcasting




