1. MAINDATA 2-way Broadband Satellite Internet Platform MAINDATA 2-way DVB RCS system Open standard based 2-way DVB RCS Satellite platform for Broadband Internet Distance Education Video Conferencing

2. MAINDATA 2-way Broadband Satellite Internet Platform DVB RCS system Diagram

3. MAINDATA 2-way Broadband Satellite Internet Platform Key DVB RCS features: Low cost & High Performance solution 60 Mbps in a forward channel !!! 2 Mbps in a return channel per terminal !!! 2-way terminals for prices < 2.000 € Efficient satellite capacity usage (30-70 % savings) While forward channel deploys ordinary DVB-S transmission return channel RCS deploys enhanced MF-TDMA access scheme as well as Turbo-coding significantly increasing efficiency of satellite segment usage. Open standard system DVB RCS is a first Open Standard system for 2-way satellite system. In opposite to proprietary systems provides high flexibility to Service Operator, for example by a change choose HUB and terminals from different vendors. As always standards leads to quick reduction in pricing as experienced with DVB-S system in past 4 years.

4. MAINDATA 2-way Broadband Satellite Internet Platform DVB RCS Services: Broadband Internet Access directly to end-users (Corporations, SOHO) Interactive Distance Education SMART EDU http://smartedu.tvhttp://smartedu.tv Videoconferencing Telemetring / SCADA – environmental data gathering - low power consumption Gas pipe lines monitoring Forest fire monitoring system Voltage level monitoring of rail road system Water resource observation system (Purity, Water level) Express way traffic monitoring system Weather condition observation system, Flood observation system, Seismic observation system

5. MAINDATA 2-way Broadband Satellite Internet Platform DVB RCS System Features System consists of a Hub and many RCST (Return Channel Satellite Terminals) Satellite parameters GEO satellite Ka/Ku/C band Transmission mechanisms Forward link DVB-S –2Mbps ~ 60 Mbps –TDM, IP over MPEG2-TS (DVB MPE), DVB-S Return link DVB RCS –128kbps ~ 2,056kbps –MF-TDMA, IP over ATM(AAL5)Turbocoding Burst-mode modulation / demodulation IF frequency –Hub: 140MHz  36MHz –Terminal: [Tx]950MHz~1450MHz / [Rx]950MHz~2050MHz Interface between Hub and RCST –Physical & MAC layer: EN 301 790 DVB-RCS Spec. –Security: IPSec and EN 301 790 DVB-RCS Spec. Fixed and dynamic IP addresses assignment Programmable air interface processing and frame formatting

6. MAINDATA 2-way Broadband Satellite Internet Platform Single User USB LAN User Ethernet Telemetry/SCADA low power consumption USB Interface Ethernet Interface – LAN version Power Consu mption : <15W Terminal’s technical characteristics Performance 60 Mbps downstream 2 Mbps upstream Max. Return burst rate : 128Kbps to 2Mbps Low-cost standalone type Only Full single ASIC chip Forward Module solution Protocols: IP over ATM, MPE, DSM-CC Coding: Turbo Coding at RCS Convolution Reed-Solomon Modulation: QPSK modulation, demodulation (Transmit module) and High performance CPU ODU interface : 950MHz~1450MHz (Tx), 950MHz~2050MHz(Rx) DC Supply Tx port : + 27V DC Supply Rx Port : + 13~18V Terminal’s technical characteristics Performance 60 Mbps downstream 2 Mbps upstream Max. Return burst rate : 128Kbps to 2Mbps Low-cost standalone type Only Full single ASIC chip Forward Module solution Protocols: IP over ATM, MPE, DSM-CC Coding: Turbo Coding at RCS Convolution Reed-Solomon Modulation: QPSK modulation, demodulation (Transmit module) and High performance CPU ODU interface : 950MHz~1450MHz (Tx), 950MHz~2050MHz(Rx) DC Supply Tx port : + 27V DC Supply Rx Port : + 13~18V DVB RCS Terminals

7. MAINDATA 2-way Broadband Satellite Internet Platform Contact : e-mail: statelov@maindata.sk GSM: +421 905 606 027 www.maindata.info www.smartedu.tv