
1-13
Chapter 1 Introduction
NortelNetworks 5399 Access Switch HardwareInstallation Guide
• Transportationvibration and shock: NSTA project 1A
standard in shippingcontainer.
• Approvals:
• Meetssafety requirements of UnderwritersL aboratories
for UL 1950 and CSAC22.2 No. 950.
• Meets EMI requirements of FCC Class A and EN55022
Class A with shielded and unshielded cables.
• Meets US and Canadian Telcom r equirements per FCC
Part 68 andIC CS-03.
•MTBF:
50,000 hrs. (estimated),c alculated@ 25°C (Mil Std 217).
•Frontclearance requirement (for connectors and cables):
6in.(15cm).