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Cable Types for 3Com Products
Ethernet Cabling
10BASE-T (Twisted Pair)
- 100m maximum segment length.
- Hub can have RJ-45 or Telco RJ-21 connectors.
10 Base 5 (Coaxial, needs tranceiver link to hub)
- 500m maximum segment length.
- 100 tranceivers per segment.
- 2.5m tranceiver spacing.
- Absolute maximum of 3km DTE to DTE path length.
10 Base 2 (Coaxial/Thinnet)
- 185m maximum segment length.
- Maximum 30 tranceivers per segment.
- 0.5m minimum tranceiver spacing.
- Absolute maximum of 1.4km DTE to DTE path length.
Fiber Optic
- 10BaseFL (fiber link) supports 2km over 62.5µm cable.
- Maximum of 4km DTE to DTE path.
Token Ring Cabling
 (B)
 (A)
Active Token Ring
- (B) Category 3 UTP at 4 Mbps (660 ft/200 m) or 16 Mbsp (330 ft//100 m.)
- (B) Category 4 or 5 UTP on 4 Mbps (1320 ft/400 m) or 16 Mbps (660 ft/200 m.)
- (A) Type 1 STP on 4 Mbps (2000 ft/600 m) or 16 Mbps (1000 ft/300 m.)
Token Ring Expansion
- Maximum Main Ring Lengths.
- (B) Category 3 UTP on 4 Mbps (660 ft/200 m) or 16 Mbsp (330 ft//100 m.)
- (B) Category 4 or 5 UTP on 4 Mbps (1320 ft/400 m) or 16 Mbps (660 ft/200 m.)
- (A) Type 1 STP on 4 Mbps (2000 ft/600 m) or 16 Mbps (1000 ft/300 m.)
- 50/125 micron fiber on 4 Mbps (6600 ft/2000 m) or 16 Mbps (6600 ft/2000 .)
- 62.5/125 micron fiber on 4 Mbps (6600 ft/2000 m) or 16 Mbps (6600 ft/2000 .)
- 100/140 micron fiber on 4 Mbps (3300 ft/1000 m) or 16 Mbps (3300 ft/1000 m.)
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