DHS-E Technical Specification Tables
3-13
Table 3-10: Mean Time Between Failure Analysis
Component
MTBF (hr)
DHS-E
System 2 (3 x 8) Modules (6 x 16)
72347.9
Case Assembly
109.0
Power Supply Unit
193.0
CPU Module
7399.1
Modem Board
377.0
3 x 8 Module
5744.0
Basic Key Telephone
2988.3
Enhanced Key Telephone
4205.3
Executive Key Telephone
4275.3
2-Port Analog Adapter and 2-Port Analog Expansion
5000.9
DSS Console
1596.7
Method:
Use the figures above for each unit installed (or to be installed)
and calculate the total for this system configuration.
Use the total from Step 1 in place of the variable
x
in the formula
at the right to calculate MTBF for this system configuration.
(1
÷
x)(10
9
) = MTBF hr
Summary of Contents for Starplus DHS
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Page 21: ...1 4 Toll Fraud and DISA Disclaimer...
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Page 79: ...2 56 Feature Upgrade Procedure...
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Page 326: ...B Part Numbers...
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Page 329: ...B 2...
Page 337: ...xx January 2000 Index...