Nortel Passport 15000 Preparation Manual page 158
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Also See for Passport 15000:
- Reference manual (252 pages) ,
- Hardware installation and maintenance (874 pages) ,
- Hardware description (390 pages)
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158 Chapter 4 Power and grounding preparation
241-1501-205 5.2S2
Potential differences can occur when signals and shields, or both, are
connected to different ground references. This requires specific installation
measures to offset any possible hazards or violation. There are three main
types of communication cables used in the Passport 15000 or 20000 system:
fiber optic cables, shielded twisted-pair, and coaxial cables.
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