• Hybrid cables that contain multiple units of recognized copper cables are subject to additional NEXT loss requirements between cable units. These requirements assure a minimum of 6 dB additional crosstalk isolation between applications that may operate on adjacent cables within the Sheath.
• All detailed specifications for the individual cable units used in the hybrid assembly still apply.

Undercarpet Cables:

• Should not be used in wet locations.
• Should be separated from power cables by at least 152 mm (6 in.), except at crossings.
• The use of carpet squares is recommended for accessibility.

Annex Information

The following Normative and Informative Annexes are provided in '568-A:

A. Reliability Testing of Connecting Hardware used for 100 Ohm UTP Cabling (Normative).
B. Transmission Testing of Connecting Hardware used for 100 Ohm UTP Cabling (Normative).
C. Transmission testing of Connecting Hardware for 150 Ohm STP-A Cables. (Normative).
D. Shared Sheath Guidelines for Multi-pair UTP Cables (Informative).
E. Unshielded Twisted-pair(UTP) Performance (Informative).
F. Migration Paths for Optical Fiber Connections (Informative).
G. Other Cable Specifications (Informative).
H. Optical Fiber Link Performance Testing (Informative).
J. Bandwidth Considerations (Information).
K. Bibliography (Informative).