Release date : 2016/10/14 18:19:09

The enterprise cabling market is growing rapidly, with emerging high-bandwidth services and higher-speed Ethernet standards being adopted, such as Gigabit Ethernet or 10G Ethernet, for Internet Protocol (IP) and high-end IP services such as VoIP, IP videoconferencing, and video The widespread use of surveillance and security technologies has created a favorable environment. Voice, data and video networks are gradually being integrated on the same infrastructure, and the demand for service reliability and quality of service (QoS) is increasing.

· Backbone network climbs to 10G

Five years ago, only 20% of local area network traffic reached the backbone network, most computing was done only by personal computers, files were stored and accessed locally, and file sharing was rare. Now, the situation has changed. It is estimated that 80% of all traffic reaches the backbone network, applications are centralized, user files are stored on servers, file sharing and sharing are common, and the burden on the backbone network increases.

As a part of the public network, the metropolitan area network (MAN) connects the core of the enterprise and the public network. The current MAN backbone network has been able to handle 10G services in the way of SONET/SDH OC-192/S-64. With the introduction of 1G Ethernet in the late 1990s and the adoption of the current IEEE 10G Ethernet standard, the use of Ethernet technology in MANs has become more and more common.

There are two ideas in the design of MAN, one is to use the existing structure such as SONET OC-48 or OC-192c to transmit 1G and 10G Ethernet separately; the other is to select the technology of local Ethernet for transmission. Regardless of which method is chosen, the growth rate of IP services running on true Ethernet or SONET is increasing rapidly.

· High-bandwidth IP application multimedia integrated cabling

Networks are becoming centralized, and the transmission of data, voice, and video over a single medium can save huge amounts of money. The STP cabling system developed based on Category 7/Class F standards can transmit independent video, voice and data signals simultaneously in one connector and a single cable, and it even supports the transmission of full bandwidth analog video over a single pair of cables ( Generally 870MHz), and the real-time transmission of voice and data is carried out simultaneously on other twisted pairs in the same sheath.

Traditional security systems can no longer meet the rapidly growing demand. Most current security systems require a more specialized separation of network and data networks. What is needed now is a dynamic system with addressable elements capable of delivering high quality video, voice and data and using the same network as existing data systems. To meet this need, new security systems are based on IP protocol, each security device becomes an addressable node on the data network. These new advanced security systems integrate voice, data and video on the same platform. Market demand for these products and systems is growing at an unpredictable rate; some analysts predict it will reach $40 billion by 2005. Obviously, this market and the emphasis on security is one of the factors driving high-bandwidth services like 10G.

· Desktop facing copper cabling

In today's new cabling market, Category 6 systems are fast becoming the solution of choice. However, in the face of the emerging IP-based 10G challenges, one has to ask, can Enhanced Category 5 still support 10G services? Is Category 6 cabling certain to meet the performance requirements of 10G? Before addressing this question, it may be useful to take a look at the recent activity of the relevant standards committee.

From November 10 to 15, 2002, at the IEEE802 plenary meeting in Hawaii, the guideline "10GBase-T Challenges and Solutions" was proposed, considering the 10Gbps Ethernet standard based on a twisted pair copper cabling system. Subsequent sessions included many interesting demonstrations of technical feasibility, broad market potential, and discussions of economic practicality. A few days later, the IEEE802.3 working group and the IEEE Standards Executive Committee (SEC) approved the establishment of the 10GBase-T working group. This working group will evaluate the feasibility of running a standard 10Gbps data rate over distances of up to 100 meters in a horizontally balanced cabling system (such as from a work area to a telecommunications room) using TIA568-B and ISO/IEC11801 building cabling specified by the standard. The working group set a deadline of 2006 for the development of the standard.

At the TIA TR-42.7 meeting in February 2003, 29 cabling product manufacturers agreed to do additional work to support 10 Gigabit applications based on Category 6/Class E rather than enhanced Category 5 cabling, responsible for the development of the international cabling standard ISO The /IEC11801:2002 committee also took a similar position and made official contact with IEEE802.3 after the meeting in New Zealand in February 2003.

Compared to Enhanced Category 5, Category 6 cabling systems have better noise immunity and provide a more transparent and versatile transmission channel, especially at high frequencies. The average anti-noise capability of Category 6 system at 6250MHz is higher than that of Enhanced Category 5. The experiment of simulating 100 meters of balanced wiring using different digital signal processing technologies points out that: through the efforts of chip and wiring manufacturers, on Category 6/E-level wiring systems The goal of running 10GBase-T can be achieved. Through DSP digital signal processing technology, chip developers can remove or compensate for most signal impairments inside the wiring, including return loss, near-end crosstalk, equivalent far-end crosstalk and insertion loss. The greater the capacity of the cabling system base, the less compensation network device manufacturers can make for their products.

IP-based 10G services are leading the development of the network. According to data, 90% of the world's network communications are currently based on IP protocols, of which the proportion of enterprise VPNs will reach 32% in 2005, and by 2007, 75% of voice services will also be used. will move to VoIP. At present, users using 1Gbps Ethernet technology account for 31% of the total. By 2006, more than 750,000 10G Ethernet ports will be ordered, and the entire market will exceed $4 billion.

Such a huge network market provides very attractive opportunities for the cabling industry. The traditional cabling system is facing a comprehensive upgrade, and 10G cabling that can meet future application needs has become the darling of the new era.