Second Five plenary session called for further implement the scientific concept of development, to adapt to new changes in domestic and international situation, adapt to people of all new look for a better life. To upgrade urban and rural communication products, communication planning and design, communications, building construction design as the core competitiveness of the telecommunications development, the individual needs of development, combined with the 2011 State Council on Accelerating the development of the communications industry's latest views on a number of spirit communication as Beijing Hanwei , Hebei, Jilin, Tieling and other places providing multiple communications consulting and project planning and design work.
At present, some enterprises existing cable networks, although some numbers to support new business, but in actual use is not particularly desirable, in the communication distance, speed and quality there are still certain restrictions. Of course, is the new fiber-based network for the optical fiber can not reach places or for various reasons are still areas to the new cable network, should consider the structure of HYA new broadband cable (PVC insulated copper sheathed overall city communication cables), to better meet the needs of new business development. Some of the existing cable companies were testing high-frequency characteristics, they have concluded that the study of cable (that is, the existing telephone cable HYA) can not achieve the technical requirements of Category 5 cable, outdoor cable cable to achieve the characteristics of class j , must pass a special design and manufacturing to achieve. But in 20MHz or less, all cables are fully suitable for showing the transmission performance.
The United States has developed for the twisted pair communication cable broadband standard (ANSI/ICEAS-98-688-1997 and S-99-689-1997), including non-filling and filling of two types. Bandwidth has been extended to 100MHz, for digital networks. IEC on this issue has been discussed a long time, in 2001, IEC62255-1 document "for high bit rate digital access telecommunication networks and more number of cables," a proposed 0.4-0.8mm diameter, 1 to 150 Yes, the maximum frequency of 30MHz and other indicators of the proposal, put forward this proposal for such a cable may open up a new space, China has also begun to explore and develop this area, and is establishing appropriate standards.
5e and Category 6 cable Category 5 cable will replace the wiring system as the development of ultra-sting
With the intelligent building, smart wiring for broadband residential building rising demand, 5e and Category 6 cable wiring system has gradually become the mainstream. Category 5 cable Category 5 cable band is 100MHz, but with two-way communications capabilities, users can send and receive broadband information. So over Category 5 cable Category 5 cable than the imbalance in the resistance, insulation resistance, unbalanced-to-ground capacitance, transmission speed and other indicators have improved, and increased near-end crosstalk attenuation level remote power and other string sound power and some other indicators, so the process and structure to do some improvements can be achieved. Category 6 cable Category 5, based on the super, and also enhance the transmission frequency band, to 250MHz, the corresponding indicators have greatly improved. Meanwhile, Category 6 cable requires not only rigorous process, and many manufacturers also have some structural improvements and innovations, such as the use of foam insulated wire or leather skin foam skin insulated wire, the line of separation of the skeleton structure and so improvehigh-frequency characteristics of the cable.
Physical foaming coaxial cable and radio frequency leaky coaxial cable will have better prospects for development
As the rapid development of mobile communications, radio-based foam RF coaxial cable with physical way, in particular, super soft shaped structure of the interior cable routing link cable has a larger market demand. Meanwhile, with the mobile communication signal coverage continues to expand, increasing the number of base stations, and marginal areas (elevators, subway, underground construction, high-rise buildings and other indoor users) on the increasing demands of mobile signals, these cables will be expected to better prospects for development. But the cable indicator requirements (such as VSWR, shielding attenuation and other requirements) has been greatly increased, requiring cable technology and structure should evolve to adapt with them.
- Information from: Beijing Hanwei Industrial Communication Technology Co., Ltd.
