Only time synchronization cables specified for NT80E3-2-PTP-NEBS in DN-0186 must be used. The time synchronization cables must not be electrically connected directly to outside-plant cables.
The NT80E3-2-PTP-NEBS SmartNIC must be installed in a CBN (common bonding network) per NEBS GR-1089.
The NT80E3-2-PTP-NEBS SmartNIC was evaluated as ITE (information technology equipment), which may be installed in central offices, telecommunication centers, offices, schools, computer rooms, and similar commercial type locations. The suitability of the SmartNIC for other product categories and environments (medical, industrial, residential and so on) other than an ITE application, may require further evaluation.
No special requirements are needed for installations above 1829 m (6000 ft).