Zhone IMACS 8000, Руководство пользователя

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Reference Guide A-19
A.7 UK Requirements
A.8 Year 2000 Compliance
All products are compliant with Bellcore Requirements GR-2945, Year 2000 Generic
Requirements: Systems and Interfaces. The following key points about this compliance are
noteworthy:
1. All dates displayed or printed by the Integrated Access System are used for reference
purposes only. No calculations, except leap year calculations (see number 3 below), are
based on these dates.
2. The displayed or printed dates use implicit century indications. In other words, years are
displayed as two digit numbers and because the dates are assumed current, or near current,
the century is implied. Since all dates are shown for reference purposes only, and are
normally used by maintenance personnel to monitor system performance over a short time
frame, the implicit century indication presents no confusion, miscalculation or potential
ambiguity.
3. Leap year calculations are handled correctly under all circumstances except one: century
years not evenly divisible by 400 will be falsely computed as leap years. The year 2000 is
evenly divisible by 400 and the Integrated Access System correctly computes it as a leap
year. The years 2100, 2200, 2300, 2500, etc. are all non-leap years, but the Integrated
Access System will computer them as leap years.
A.8.1 Service requirements
If the product malfunctions, all repairs must be performed by the manufacturer or a
Zhone-authorized agent. It is the responsibility of users requiring service to report the
need for service to Zhone customer service.
Clearance (mm) Creepage (mm) Voltage Used or Generated By Host or Other Cards
2.0 2.4 (3.8) Up to 50Vrms or VDC
2.6 3.0 (4.8) Up to 125Vrms or VDC
4.0 5.0 (8.0) Up to 250Vrms or VDC
4.0 6.4 (10.0) Up to 300Vrms or VDC
For a host or other expansion card fitted in the host,
using or generating voltages greater than 300V (rms
or DC), advice from a competent
telecommunications safety engineer must be
obtained before installation of the relevant
equipment. Above 300Vrms or VDC