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Difference between revisions of "MTBF figures"

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| 2213000220||Heavy Duty Analogue Hotline Telephone With Door||6500000
 
| 2213000220||Heavy Duty Analogue Hotline Telephone With Door||6500000
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| 1008072100||IP Heavy Duty Telephone, Full Keyboard||1200000
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| 1008072200||IP Heavy Duty Telephone, Door, Full Keyboard||1200000
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| 1008072120||IP Heavy Duty Telephone, Hotline||1300000
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| 1008072220||IP Heavy Duty Telephone, Door, Hotline||1300000
 
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| 1008093000||IP Master Station Kit||1400000
 
| 1008093000||IP Master Station Kit||1400000
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| 1008131020||VoIP Intercom Module, TKIS-2||1500000
 
| 1008131020||VoIP Intercom Module, TKIS-2||1500000
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| 3006100019||Wall Double Faced Loudspeaker, 4W - W/Fuse, CAR-4TF||1500000
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| 3006100088||Horn Loudspeaker, 20 ohm, 15W, VML-1520||1500000
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| 3006100090||Hornspeaker, 15W, 100V line, IP-66, VML-15T/F||1500000
 
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Revision as of 10:09, 11 April 2013

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
1007080000 Light Industrial Master Station 1800000
1007082000 Noise Cancelling Industrial Master Station 1800000
1007083000 Heavy Duty Industrial Sub Station 1800000
1007085000 Heavy Duty Industrial Sub Station 1800000
1007086000 Heavy Duty Industrial Master Station 1800000
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
1008072100 IP Heavy Duty Telephone, Full Keyboard 1200000
1008072200 IP Heavy Duty Telephone, Door, Full Keyboard 1200000
1008072120 IP Heavy Duty Telephone, Hotline 1300000
1008072220 IP Heavy Duty Telephone, Door, Hotline 1300000
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 Audio and Remote Input/Output unit, IPARIO 900000
1008111010 Turbine Compact IP Standard-1, TCIS-1 1400000
1008111020 Turbine Compact IP Standard-2, TCIS-2 1400000
1008111030 Turbine Compact IP Standard-3, TCIS-3 1400000
1008111040 Turbine Compact IP Standard-4, TCIS-4 1350000
1008111050 Turbine Compact IP Standard-5, TCIS-5 1300000
1008111060 Turbine Compact IP Standard-6, TCIS-6 1400000
1008114010 Turbine Compact Analog Standard-1, TCAS-1 2100000
1008114020 Turbine Compact Analog Standard-2, TCAS-2 2100000
1008114030 Turbine Compact Analog Standard-3, TCAS-3 2100000
1008131020 VoIP Intercom Module, TKIS-2 1500000
3006100019 Wall Double Faced Loudspeaker, 4W - W/Fuse, CAR-4TF 1500000
3006100088 Horn Loudspeaker, 20 ohm, 15W, VML-1520 1500000
3006100090 Hornspeaker, 15W, 100V line, IP-66, VML-15T/F 1500000