The Return Systems Of Duplex Transmitting For HFC

Today,roadband data services such as internat,IP phone and VOD lead people's culture life to a new unprecedented state,and made communication and the exchange more pleasure .with the bandwith increment, long–distance-education, long–distance-medical-treatment, internet official,internet shopping become trueth, following is the larger request of market for broadband data telecommunication business.ATM,xDSL,DDN,Cable Modem Cable phone become more and more userful,all kinds of way is for the same purpose ---to satisfyincreasing need of broadband customers. CATV network become a compelling power fot its proper borad character,.with the gradually opening of chinese telecom market ,it is a important mission for Chinese CATV operator how to use CATV networks Occupy the certain market quota in fast growing broad telecommunication,and that is urgent ,and it is not doubt matter of the moment for catv operator to user broad HFC net work to Proceed to increase in value the business.The HFC systems of duplex CATV faces delivering system is a new networks delivery form ,which is form increasing with the need of CATV increasing value business and the realism of single delivering system facing to reform completely to double faces networks. With the large-scale development and update of the HFC networks ,broad data business of HFC networks become more and more important cause for people to choice broadband,but running telecommunication business on HFC networks ,the first is to resolve technique problems of the up bound delivering system this article primarily aims to the up bound of HFC duplex systems faces system ,and describes the up bound system's model,components,capacity,composing and technique character and how to adjust ,how to design etc such main aspect. And this article also sum up the basic request of adjust and design the up bound system Combining the actual engineering.