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 Standardization: Primary Guideline
 - SO/IEC 13818 Info tech- general code of moving graphics & accompanying sound.
 - Business Info (SI) standard (DVB-SI) in EN 300 468 DVB system.
 - Standard of Graph & text transmission bit streams: (DVB-TXT)300 472 DVB.
 - EN 101 192 DVB Standard (DVB-DATA) of Data Broadcasting.
 - TR 101 202 Data Broadcasting guide.
 - TS 102 201 DVB IRD Interface tech standard (DVB-IRD).
 - EN 50221 About Conditional Accessing and other common interfaces of DVB decoders (DVB-CI).
 - TS 101 197-1 DVB Simulcrypt receiving standard (DVB-SIM).
 - ETR 289 Common Scrambling System Description (DVB-CSA).
 - ETR 154 Application guide of MPEG-2 System, Video & audio in satellite, cable and  terrestrial systems. (DVB- MPEG).

 Expandability: Brings long-term vitality for the system
 Three crucial system capabilities we care most:
 - Expandability of business.
 - Management capability of relative business.
 - Upgrade capacity.

 Measures to guarantee these three capabilities:     
 - System and subsystems strictly  complying to according standards.
 - Focus on Network Management System ( ROSA ), Subscriber Management System (SMS), CA System.
 - Modulated standard equipment + open software module design is a key insurance of smooth upgrade.

 Focus: System, Efficiency and Reliability
 How to ensure system Efficiency
 - Balance ‘backup’ and ‘efficiency’ .
 - Take resource utility rate of relative equipment into consideration from the beginning of equipment model selection stage.
 - Focus on management efficiency of overall system and centralized management.

 How to ensure System Reliability
 - For common equipment in the system: pick industrial- class equipment provided by renowned manufacturers.
 - For sub business system: Hardware & software should be complying with reliability requirement. 
 - Key factors: feasible environment, proper operation and management.     

 System Economics – profitability
 Investment stages  
 - Stage I: Realize multiple digital TV program broadcasting, optimize system platform, establish subscriber base, cumulate experience;
 - Stage II: Add verified value-added services, expand subscriber scale, optimize verified tolling system;
 - Stage III: Further exploit high-end subscriber service type.   

 System Profit
 - Initial profit: Subscriber monthly rent and STB sales profit.
 - Mid-term profit: Gradually increase proportion of value-added service profits.
 - Long-term profit: Based on optimized toll management and operating structure, various types of high-end subscriber services ensures the persistent increase of profit.


Zhengzhou Digital TV Business Syterm

  Phase I completing time:  December 2001
  Project Scale:  Totally 12 Analogue Channels
  Chief System Integrator : AVIT

Hubei Provincial Digital TV Business Sytesm

  Phase I completing time:  December 2001
  Project Scale:  Totally 12 Analogue Channels
  Chief System Integrator : AVIT

Shenyang Cable Digital TV System

  Phase I completing time: September 2001
  Phase II completing time: April 2004
  Project Scale: Totally 12 Analogue Channels
  Chief  System Integrator :AVIT 

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