3Com 3C905C-TX manual Standards Conformance, Cabling Requirements, Twisted-Pair Cable

70APPENDIX A: SPECIFICATIONS AND CABLING REQUIREMENTS

Standards Conformance

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IEEE 802.3 10BASE-T IEEE 802.3u 100BASE-TX

IEEE 802.3x Full Duplex auto-negotiation and flow control

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NWay 10/100 auto-negotiation IEEE 802.1p/Q

IEEE 802.1Q VLAN Tagging

RMON Microsoft PC97 Microsoft PC98 Microsoft PC99 Net PC

PCI 2.2

DMI 2.0 and 2.0s ACPI 1.0

Wired for Management 1.1a, 2.0

Pre-OS boot protocol support (PXE, BootP/DHCP, NCP, RPL)

Cabling Requirements

The cable, quality, distance, and connectors must comply with the Electronic Industries Association/Telecommunications Industries Association (EIA/TIA) 568 Commercial Building Wiring Standard and the Technical Services Bulletin

TSB38 standards.

Twisted-Pair Cable

Twisted-pair cable consists of copper wires surrounded by an insulator. Two wires are twisted together (the twisting prevents interference problems) to form a pair, and the pair forms a circuit that can transmit data. A cable is a bundle of one or more twisted pairs surrounded by an insulator.

Unshielded twisted pair (UTP) is the most commonly used type of twisted-pair cable. Shielded twisted pair (STP) provides protection against crosstalk. Twisted-pair cable is now commonly used in Ethernet, Fast Ethernet, and other network topologies.