The Multiplexer is a digital broadcasting TV system TS stream re-multiplexer. NDS3101 multiplexer combines several single-programs or multiple-programs, which are compressed, coded, and multiplexed according to customer request by head-end, into single transport stream. Besides, it is also able to interpolate EPG (Electronic Program Guide), CA (Conditional Access) and digital broadcasting etc. Maximally, it can synchronal multiplex 6 route input code streams, and support ASI interface. The code rate of input code stream is maximally up to 270Mbps, while code rate of output code stream is maximally up to 270Mbps. Through auxiliary data input channel, it can real-time interpolate the data, created by outer SI（Service Information）server, into output code stream, in order to realize the EPG and digital broadcasting etc. value-added business. Its dimension is standard 1U case. By watching the LCD display on the front panel, user can finish the setting of auto-running of this machine.