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| The system network department of strengthgroup provides system network solution for television and broadcasting system, and wide band (SDH transmit, ATM exchange, HFC connect) is its emphasis, as well as provides solution for intranet. |
| Typical
Solution Wide band ATM based on multi-service ATM system is the result to fulfil the communicating need for wide band integrated services digital signals in recent years. It heightens the transmission speed by means of provide a method to transmit, multiplex, and exchange for wide band integrated service digital signals so that language, data, graphics, and images could be transmitted as a fixed cell length in one network. |
| Interface
Function The solution has more than one interface that can transmit data, voice, images and so on and the quality is guaranteed. Its interfaces: 10M, 100M, 1000M Ethernet interface 2M frame relay interface FDDI, TOKEN, RING interface Internet access DDN access X.25 access ISDN access 2-622 ATM tache |
| Services: Connect Internet with computer network VOD HDTV Videoconference Videophone Tele-education Tele-treatment Videotex E-business |
| Characteristics: ATM is an advanced strategical technology solution, which predigests and unifies the high integration of information such as voice, images, and data in network. ATM system network needs only working equipment and switch without adjustor and router, thus it is very easy and convenient for technology support and training. ATM provides unmatched flexibility that the customers could communicate and share resource as long as set up SVC via ATM switch. ATM ensures fair and cost-efficient bandwidth utilization. High-speed wide band transmission No limit for transmission distance ATM simplifies network design. |
| ATM over Sonet / SDH In principle, a transmission network has two basic equipment that are transmission equipment and network node. The transmission equipment could either be cable system, microwave system, or satellite system. The network node could either be simply node with multiplex or complex node with transmission, multiplex, cross connection and exchange. SDH network units was came into being in order to unify those network node interfaces. |
| Interface Electricity interface: 2.048 mb/s 34.368mb/s 139.264mb/s 155.520mb/s Light interface: 155.520mb/s 622.080mb/s 2488.320mb/s Backward and forward compatibility ATM FDDI DQDB BISD FR |
| Service High-speed communication: efficient data communication, interlinkage of exchanger, transmission of abundant documents, videotex of high definition, e-business, video communication, videoconference, videophone, HDTV, VOD |
| Characteristic SDH admits three major PDH. SDH takes 155 mb/s as basic module and adopts pointer adjust technology and synchromultipling in which way it simplifies the multiplex and tapout process and prevent the add-drop process while multiply and demultiply. SDH unifies electricity interface standard and reduce interface classes. SDH offers self-diagnoses and auto-restore capability so that network could restore all transactions from malfunction by itself immediately without being noticed. SDH has flexible rebuild function by means of adopting module framework to well coordinate with cross-linked equipment and circuit. Network integrated with SDH eliminate a great deal of interface switch processes and back-to-back connection that traditional communication needs. So SDH communicating network is more economy and reliable. SDH provides strong network management function to meet all kinds of management and maintenance needs and intelligentize network management. SDH supports ATM and narrow band or wide band integrated services digital network. |
| CATV integrated services HFC solution The rapid development of fiber transmission technology, digital technology and computer technology results in a revolutionary change of CATV system. The most remarkable change is that the breakthrough of fiber technology in 1310nm and 1550nm has totally changed the traditional full cable CATV network frame and formed HFC structure. HFC not only improves the CATV transmission quality and reliability but also forms a bidirectional basic transmission structure with favorable performance. And the band width could be enlarged to 1000MHz. |
| Interface HFC has three key equipment: HDT, NIU and FN. Their interface functions are as follows: HDT 2 mbit/s interface or V5 interface or V5.2 interface Radio modem interface OAM interface Light interface RF interface |
| Services Tele-education Digital broadcasting e-library Analog TV e-business Digital TV videophone VOD videoconference Data broadcasting tele-meter reading Videotex Internet access |
| Characteristics Low transmission loss, 155nm light signals, attenuation<0.25db/km Band width: 5-1G No disturbance among fibers High transmission quality Strong reliability Well performance Strong compatibility |
| Email: webmaster@strengthgroup.com |