Network Wiring Basics

IBM Cable

IBM Token Ring specifications define the following cable types:

Type 1 A shielded cable containing two twisted-pair 22 AWG wires.
Type 2 A voice/data shielded cable containing two twisted-pair 22 AWG wires for data with four twisted pairs of 26 AWG wires added outside the shield for voice.
Type 3 Contains four solid, unshielded twisted-pair 22 or 24 AWG cables. A media filter is required for use with Token Ring networks.
Type 5 Fiber-optic (100/140) cable (two strands).
Type 6 Flexible, shielded twisted-pair patch cables of 26 AWG wire. Distance is limited to two-thirds that of Type 1. A patch cable connects a PC to another device or a wall plug.
Type 8 Shielded twisted-pair 26 AWG cable for use under carpets. Distance limits are half of Type 1.
Type 9 Shielded twisted-pair 26 AWG plenum firesafe cable. Distance is limited to two-thirds that of Type 1.

Although Type 1 shielded cable is the most commonly used cable, Type 3 is also used. Type 3 cannot be used with 16 Mbits/sec Token Ring cards yet.



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The Network Wiring Virtual Lecture by L. Scott Freudenthal