Connection Hardware; 3Com Trunk Cable Recommendations; Copper Trunk Cables; Fiber Trunk Cables - 3Com CoreBuilder 5000 User Manual

3Com Trunk Cable
Recommendations
Table 2-8

120 ohm Cable Specifications

Characteristics
Impedance
Attenuation (dB/100 m)
NEXT Attenuation, max

Connection Hardware

The performance of installed cable only meets the specifications listed
when your connection hardware level is greater than or equal to the
level of the installed cable. Connector hardware is specified in SP-2840:
Commercial Building Telecommunications Cabling Standard
(ANSI/TIA/EIA) and EIA/TIA TSB-40.
CoreBuilder 5000 Token Ring products have either copper or fiber trunk
(Ring-In/Ring-Out) ports. This section lists trunk cabling requirements
for:

Copper Trunk Cables

Fiber Trunk Cables

Copper Trunk Cables
Connect copper trunk ports using Unshielded Twisted Pair (UTP) 3, 4, or
5 and Shielded Twisted Pair (STP). The distances are the same as the
active lobe port distances. (Refer to
However, for the highest integrity, use only STP and UTP 5 for
connecting trunks.
When configuring ports 17 and 18 as trunks, cable adapter 6200ADT-RI
must be connected on port #18.
Fiber Trunk Cables
Ensure that fiber-optic trunk cables are:
Multimode
Grade-index optical fiber waveguide with nominal 62.5/125 µM
core/cladding diameter
Selecting Appropriate Cable Lengths
4 Mbps
120 ohms
3.5 dB
46 dB
Table 2-3 for trunk cable lengths.)
2-9
16 Mbps
120 ohms
6.2 dB
38 dB