Difference between revisions of "MTBF figures"
From Zenitel Wiki
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| + | | 1008095100||IPARIO||900000 | ||
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Revision as of 10:44, 18 January 2012
MTBF (Mean Time Between failures) figures try to give a measure of the reliability of a system. There are 2 ways in which MTBF figures can be obtained:
- Calculation. There are a number of different standards for the calculation of MTBF figures, of which MIL-HDBK-217 is probably the most widely used.
- Statistical information. MTBF figures can also be calculated form data gathered about failures in real installations. Of each electronic unit the number of hours in operation is reported at the moment of failure. When this is done over a sufficient large quantity of the same units a realistic ‘real life’ MTBF can be calculated. The MTBF of newly designed items can still be calculated this way by comparing them to existing items with a similar complexity.
Zenitel mainly uses statistical information, in line with common practise.
| Item number | Item | MTBF |
| 1008001000 | IP Desk/Wall Master Station, Display and Handset | 1300000 |
| 1008000000 | IP Desk/Wall Master Station, Display | 1300000 |
| 1008007000 | IP Dual Display Station | 1000000 |
| 1007034210 | Desk/Wall Master Station, Handset | 3100000 |
| 1007036210 | Desk/Wall Master Station | 3000000 |
| 1007034310 | Desk/Wall Master Station, Display and Handset | 2500000 |
| 1007036310 | Desk/Wall Master Station, Display | 2800000 |
| 1007072090 | Desk/Wall Master Station, Display and Handset | 2500000 |
| 1007071090 | Desk/Wall Master Station, Display | 2800000 |
| 1007007000 | Dual Display Station | 1500000 |
| 1008031000 | IP Flush Master, Display | 1300000 |
| 1008010100 | IP DAK-48 Unit | 2000000 |
| 1007006101 | Control Room Master IV | 950000 |
| 1007006110 | DAK-48 Unit | 1500000 |
| 1007043000 | Console Master Station | 1740000 |
| 1008015000 | IP OR Master, Display | 1300000 |
| 1076036600 | OR Master | 1100000 |
| 1007036600 | OR Master, Display | 1100000 |
| 1007042000 | Wall Master Station, Display | 2500000 |
| 1007040000 | Wall Master Station, Standard | 3000000 |
| 1008041100 | IP Vandal Resistant Substation | 1400000 |
| 1008041150 | IP Vandal Resistant Substation Conformal Coated | 1400000 |
| 1008051000 | IP Vandal Resistant Substation, 3 gang backbox | 1400000 |
| 1007056100 | Vandal Resistant Substation | 2100000 |
| 1007056200 | Vandal Resistant Substation 2 button | 2100000 |
| 1070601010 | Tamper Resistant Substation | 2100000 |
| 1070601020 | Tamper Resistant Substation | 2100000 |
| 1007061000 | Tamper and Vandal Proof Station | 1500000 |
| 1007063000 | Tamper and Vandal Proof Station | 1500000 |
| 1007110000 | Hot Line Station | 1540000 |
| 2213000100 | Heavy Duty Analogue Telephone | 6500000 |
| 2213000200 | Heavy Duty Analogue Telephone With Door | 6500000 |
| 2213000220 | Heavy Duty Analogue Hotline Telephone With Door | 6500000 |
| 1008093000 | IP Master Station Kit | 1400000 |
| 1008090200 | IP Substation Kit | 1500000 |
| 1008090250 | IP Substation Kit, Conformal Coated | 1500000 |
| 1000142500 | Master station kit for display station | 3000000 |
| A100C01425 | Master station kit for display station, PCB only | 3000000 |
| 1007102000 | Substation Kit | 3000000 |
| 1009601003 | AlphaCom XE1 | 620000 |
| 1009608000 | AlphaCom XE7 Package | 430000 |
| 1009608300 | AlphaCom XE7 with license for 12 IP stations | 620000 |
| 1009608100 | AlphaCom XE7 Package with 1 ASLT | 510000 |
| 1009608106 | AlphaCom XE7 with license for 6 IP stations and 1 ASLT | 510000 |
| 1009621000 | AlphaCom XE20 for 19\" Rack Mounting | 430000 |
| 1009627000 | AlphaCom XE26 for 19\" Rack Mounting | 430000 |
| 1009627001 | AlphaCom XE26 for 19\" Rack Mounting | 1100000 |
| 1009627100 | AlphaCom XE26 Floor Cabinet | 430000 |
| 1009627200 | AlphaCom XE26 Floor Cabinet with Distribution Field | 430000 |
| 1009104000 | Subscriber Line Board, ATLB-12 | 800000 |
| 1009101010 | Subscriber Line Board, ASLT | 3000000 |
| 1009303001 | General Purpose Audio Interface, AGA | 10000000 |
| 1009202100 | Processor Board, AMC-IP - Version 11 | 1400000 |
| 1009971000 | InterGuard 60W Amplifier, 100V Line | 1100000 |
| 1009703000 | Power Supply, APWR - AC version | 1400000 |
| 1009970200 | Multi Relay Board, MRBD | 2000000 |
| 1009505000 | FBSAR, Filter Board and Speech Adapter with Relay | 3000000 |
| 1009301000 | Program & Clock Board, APC | 5500000 |
| 1009102000 | Subscriber Line Board, ATLB | 890000 |
| 1008095100 | IPARIO | 900000 |