1000BASE-T, also known as IEEE 802.3ab, is a standard for Gigabit Ethernet (1 gigabit is 1000 megabits per second) on copper cables, using four pairs of Category 5 unshielded twisted pair to achieve the gigabit data rate. The maximum length of each 1000BASE-T network segment can reach 100 meters (330 feet). 1000BASE-T can be used in data centers for server switching, for uplinks from desktop computer switches, or directly to the desktop for broadband applications.

The 1000BASE-T standard leverages the existing cable infrastructure as it is specified to operate up to 100 meters on Category 5 cabling. There are other key specifications of 1000BASE-T available. First, it supports the Ethernet MAC (Media Access Control), and is thus backward compatible with a 10/100 Mbps Ethernet. Second, many 1000BASE-T products will support 100/1000 auto-negotiation, and therefore 1000BASE-T can be incrementally deployed in a Fast Ethernet network. Third, 1000BASE-T is a high-performing technology with less than one erroneous bit in 10 billion transmitted bits. This bit error rate of less than 10—10 is the same error rate as that of100BASE-T. The following figure is the CAT5e unshielded twisted pair (UTP) which employs the 1000BASE-T standard.

1000BASE-T, as a lower-cost solution for Gigabit transmission, has the following advantages.

• Performance

1000BASE-T scales Ethernet 10/100 Mbps performance to 1000 Mbps. Compared with 1Gbps, 1000BASE-T is 100 times as fast as the standard Ethernet. It allows the smooth migration of existing10/100 networks to 1000 Mbps-based networks. What’s more, when used in conjunction with 1000BASE-T SFP Copper RJ45 transceiver modules, 1000BASE-T makes shared gigabit service possible and aggregates one gigabit of server support. For instance, HP JD089B, this module is based on the SFP Multi Source Agreement (MSA), compliant with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE STD 802.3 and 802.3ab. It supports 1000BASE-T operation in host systems with a compact RJ-45 connector assembly. The image below is an overview of this product.

• Cost

As one kind of cost-effective and high-speed networking technology available now, 1000BASE-T save Ethernet equipment and infrastructure investments, including the investment in the installed Category 5 cabling infrastructure. Besides, it is unnecessary to go on the time-consuming and costly task of replacing copper cables which are located in walls, ceilings, or raised floors into fiber cables.

Today, many potential Gigabit Ethernet technology adopters have already used CAT-5 cabling to boost network performance in a simple and cost-effective way. Fiberstore supplies a series of 1000BASE-T products, including the above-mentioned 1000BASE-T SFP transceiver modules. In addition, a range of 1000BASE-SX SFP transceiver modules which offer the same functions as NETGEAR AGM731F are also available in Fiberstore. Please do not hesitate to contact Fiberstore for more information about 1000BASE-T and 1000BASE-SX SFPs.

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